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Finding the Fourth Proportional to 71,494.38, 98,662.37 and 39,663.29

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Solution

The fourth proportional to 71,494.38, 98,662.37 and 39,663.29 is: 54,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.38 : 98,662.37 = 39,663.29 : x
  2. Step 2: Convert to fraction form
    71,494.38/98,662.37 = 39,663.29/x
  3. Step 3: Cross multiply
    71,494.38x = 98,662.37 × 39,663.29
  4. Step 4: Simplify right side
    71,494.38x = 3,913,273,501.77
  5. Step 5: Solve for x
    x = 3,913,273,501.77/71,494.38
  6. Step 6: Final answer
    x = 54,735.40

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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.