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Finding the Fourth Proportional to 71,551.80, 107,327.70 and 61,702.20

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Solution

The fourth proportional to 71,551.80, 107,327.70 and 61,702.20 is: 92,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.80 : 107,327.70 = 61,702.20 : x
  2. Step 2: Convert to fraction form
    71,551.80/107,327.70 = 61,702.20/x
  3. Step 3: Cross multiply
    71,551.80x = 107,327.70 × 61,702.20
  4. Step 4: Simplify right side
    71,551.80x = 6,622,355,210.94
  5. Step 5: Solve for x
    x = 6,622,355,210.94/71,551.80
  6. Step 6: Final answer
    x = 92,553.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.