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Finding the Fourth Proportional to 67,641.80, 101,462.70 and 66,475.40

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Solution

The fourth proportional to 67,641.80, 101,462.70 and 66,475.40 is: 99,713.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,641.80 : 101,462.70 = 66,475.40 : x
  2. Step 2: Convert to fraction form
    67,641.80/101,462.70 = 66,475.40/x
  3. Step 3: Cross multiply
    67,641.80x = 101,462.70 × 66,475.40
  4. Step 4: Simplify right side
    67,641.80x = 6,744,773,567.58
  5. Step 5: Solve for x
    x = 6,744,773,567.58/67,641.80
  6. Step 6: Final answer
    x = 99,713.10

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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.