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Finding the Fourth Proportional to 71,585.64, 98,788.26 and 39,754.60

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Solution

The fourth proportional to 71,585.64, 98,788.26 and 39,754.60 is: 54,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,585.64 : 98,788.26 = 39,754.60 : x
  2. Step 2: Convert to fraction form
    71,585.64/98,788.26 = 39,754.60/x
  3. Step 3: Cross multiply
    71,585.64x = 98,788.26 × 39,754.60
  4. Step 4: Simplify right side
    71,585.64x = 3,927,287,761.00
  5. Step 5: Solve for x
    x = 3,927,287,761.00/71,585.64
  6. Step 6: Final answer
    x = 54,861.39

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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.