Home / 87,729.64-131,613.90-40,957

Finding the Fourth Proportional to 87,729.64, 131,613.90 and 40,957

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Solution

The fourth proportional to 87,729.64, 131,613.90 and 40,957 is: 61,444.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,729.64 : 131,613.90 = 40,957 : x
  2. Step 2: Convert to fraction form
    87,729.64/131,613.90 = 40,957/x
  3. Step 3: Cross multiply
    87,729.64x = 131,613.90 × 40,957
  4. Step 4: Simplify right side
    87,729.64x = 5,390,510,502.30
  5. Step 5: Solve for x
    x = 5,390,510,502.30/87,729.64
  6. Step 6: Final answer
    x = 61,444.58

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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.