Home / 78,641,617.35-108,571,985.08-69,915,688.28

Finding the Fourth Proportional to 78,641,617.35, 108,571,985.08 and 69,915,688.28

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Solution

The fourth proportional to 78,641,617.35, 108,571,985.08 and 69,915,688.28 is: 96,525,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,641,617.35 : 108,571,985.08 = 69,915,688.28 : x
  2. Step 2: Convert to fraction form
    78,641,617.35/108,571,985.08 = 69,915,688.28/x
  3. Step 3: Cross multiply
    78,641,617.35x = 108,571,985.08 × 69,915,688.28
  4. Step 4: Simplify right side
    78,641,617.35x = 7,590,885,064,251,231
  5. Step 5: Solve for x
    x = 7,590,885,064,251,231/78,641,617.35
  6. Step 6: Final answer
    x = 96,525,037.51

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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.