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Finding the Fourth Proportional to 71,666.66, 98,901.17 and 39,402.64

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Solution

The fourth proportional to 71,666.66, 98,901.17 and 39,402.64 is: 54,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,666.66 : 98,901.17 = 39,402.64 : x
  2. Step 2: Convert to fraction form
    71,666.66/98,901.17 = 39,402.64/x
  3. Step 3: Cross multiply
    71,666.66x = 98,901.17 × 39,402.64
  4. Step 4: Simplify right side
    71,666.66x = 3,896,967,197.09
  5. Step 5: Solve for x
    x = 3,896,967,197.09/71,666.66
  6. Step 6: Final answer
    x = 54,376.29

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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.