Home / 78,802,202.64-118,275,965.16-39,967,909.92

Finding the Fourth Proportional to 78,802,202.64, 118,275,965.16 and 39,967,909.92

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Solution

The fourth proportional to 78,802,202.64, 118,275,965.16 and 39,967,909.92 is: 59,988,718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,802,202.64 : 118,275,965.16 = 39,967,909.92 : x
  2. Step 2: Convert to fraction form
    78,802,202.64/118,275,965.16 = 39,967,909.92/x
  3. Step 3: Cross multiply
    78,802,202.64x = 118,275,965.16 × 39,967,909.92
  4. Step 4: Simplify right side
    78,802,202.64x = 4,727,243,121,215,938
  5. Step 5: Solve for x
    x = 4,727,243,121,215,938/78,802,202.64
  6. Step 6: Final answer
    x = 59,988,718.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.