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Finding the Fourth Proportional to 87,674.80, 131,425.80 and 43,308.40

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Solution

The fourth proportional to 87,674.80, 131,425.80 and 43,308.40 is: 64,919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,674.80 : 131,425.80 = 43,308.40 : x
  2. Step 2: Convert to fraction form
    87,674.80/131,425.80 = 43,308.40/x
  3. Step 3: Cross multiply
    87,674.80x = 131,425.80 × 43,308.40
  4. Step 4: Simplify right side
    87,674.80x = 5,691,841,116.72
  5. Step 5: Solve for x
    x = 5,691,841,116.72/87,674.80
  6. Step 6: Final answer
    x = 64,919.92

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1.5x scale

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.