Home / 87,472.59-120,728.66-54,782.16

Finding the Fourth Proportional to 87,472.59, 120,728.66 and 54,782.16

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Solution

The fourth proportional to 87,472.59, 120,728.66 and 54,782.16 is: 75,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,472.59 : 120,728.66 = 54,782.16 : x
  2. Step 2: Convert to fraction form
    87,472.59/120,728.66 = 54,782.16/x
  3. Step 3: Cross multiply
    87,472.59x = 120,728.66 × 54,782.16
  4. Step 4: Simplify right side
    87,472.59x = 6,613,776,494.79
  5. Step 5: Solve for x
    x = 6,613,776,494.79/87,472.59
  6. Step 6: Final answer
    x = 75,609.70

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1.5x scale

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.