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Finding the Fourth Proportional to 71,359.70, 98,276.64 and 69,809.97

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Solution

The fourth proportional to 71,359.70, 98,276.64 and 69,809.97 is: 96,142.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359.70 : 98,276.64 = 69,809.97 : x
  2. Step 2: Convert to fraction form
    71,359.70/98,276.64 = 69,809.97/x
  3. Step 3: Cross multiply
    71,359.70x = 98,276.64 × 69,809.97
  4. Step 4: Simplify right side
    71,359.70x = 6,860,689,290.10
  5. Step 5: Solve for x
    x = 6,860,689,290.10/71,359.70
  6. Step 6: Final answer
    x = 96,142.35

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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.