Home / 87,781.48-131,672.14-28,617.16

Finding the Fourth Proportional to 87,781.48, 131,672.14 and 28,617.16

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Solution

The fourth proportional to 87,781.48, 131,672.14 and 28,617.16 is: 42,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,781.48 : 131,672.14 = 28,617.16 : x
  2. Step 2: Convert to fraction form
    87,781.48/131,672.14 = 28,617.16/x
  3. Step 3: Cross multiply
    87,781.48x = 131,672.14 × 28,617.16
  4. Step 4: Simplify right side
    87,781.48x = 3,768,082,697.92
  5. Step 5: Solve for x
    x = 3,768,082,697.92/87,781.48
  6. Step 6: Final answer
    x = 42,925.71

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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.