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Finding the Fourth Proportional to 71,365.89, 98,490.92 and 39,537.75

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Solution

The fourth proportional to 71,365.89, 98,490.92 and 39,537.75 is: 54,565.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,365.89 : 98,490.92 = 39,537.75 : x
  2. Step 2: Convert to fraction form
    71,365.89/98,490.92 = 39,537.75/x
  3. Step 3: Cross multiply
    71,365.89x = 98,490.92 × 39,537.75
  4. Step 4: Simplify right side
    71,365.89x = 3,894,109,372.23
  5. Step 5: Solve for x
    x = 3,894,109,372.23/71,365.89
  6. Step 6: Final answer
    x = 54,565.41

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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.