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Finding the Fourth Proportional to 71,164.52, 98,207.43 and 38,899.19

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Solution

The fourth proportional to 71,164.52, 98,207.43 and 38,899.19 is: 53,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,164.52 : 98,207.43 = 38,899.19 : x
  2. Step 2: Convert to fraction form
    71,164.52/98,207.43 = 38,899.19/x
  3. Step 3: Cross multiply
    71,164.52x = 98,207.43 × 38,899.19
  4. Step 4: Simplify right side
    71,164.52x = 3,820,188,890.70
  5. Step 5: Solve for x
    x = 3,820,188,890.70/71,164.52
  6. Step 6: Final answer
    x = 53,681.09

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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.