Home / 78,313,142,449.12-108,072,152,122.80-42,670,457,448.16

Finding the Fourth Proportional to 78,313,142,449.12, 108,072,152,122.80 and 42,670,457,448.16

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Solution

The fourth proportional to 78,313,142,449.12, 108,072,152,122.80 and 42,670,457,448.16 is: 58,885,239,747.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313,142,449.12 : 108,072,152,122.80 = 42,670,457,448.16 : x
  2. Step 2: Convert to fraction form
    78,313,142,449.12/108,072,152,122.80 = 42,670,457,448.16/x
  3. Step 3: Cross multiply
    78,313,142,449.12x = 108,072,152,122.80 × 42,670,457,448.16
  4. Step 4: Simplify right side
    78,313,142,449.12x = 4,611,488,168,487,012,532,224
  5. Step 5: Solve for x
    x = 4,611,488,168,487,012,532,224/78,313,142,449.12
  6. Step 6: Final answer
    x = 58,885,239,747.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.