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Finding the Fourth Proportional to 71,279.68, 98,387.89 and 41,085.19

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Solution

The fourth proportional to 71,279.68, 98,387.89 and 41,085.19 is: 56,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,279.68 : 98,387.89 = 41,085.19 : x
  2. Step 2: Convert to fraction form
    71,279.68/98,387.89 = 41,085.19/x
  3. Step 3: Cross multiply
    71,279.68x = 98,387.89 × 41,085.19
  4. Step 4: Simplify right side
    71,279.68x = 4,042,284,875.10
  5. Step 5: Solve for x
    x = 4,042,284,875.10/71,279.68
  6. Step 6: Final answer
    x = 56,710.20

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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.