Home / 78,313,142,007.12-108,072,151,512.84-42,670,457,006.16

Finding the Fourth Proportional to 78,313,142,007.12, 108,072,151,512.84 and 42,670,457,006.16

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Solution

The fourth proportional to 78,313,142,007.12, 108,072,151,512.84 and 42,670,457,006.16 is: 58,885,239,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313,142,007.12 : 108,072,151,512.84 = 42,670,457,006.16 : x
  2. Step 2: Convert to fraction form
    78,313,142,007.12/108,072,151,512.84 = 42,670,457,006.16/x
  3. Step 3: Cross multiply
    78,313,142,007.12x = 108,072,151,512.84 × 42,670,457,006.16
  4. Step 4: Simplify right side
    78,313,142,007.12x = 4,611,488,094,691,848,617,984
  5. Step 5: Solve for x
    x = 4,611,488,094,691,848,617,984/78,313,142,007.12
  6. Step 6: Final answer
    x = 58,885,239,137.42

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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.