Home / 87,431.32-120,665.46-49,711.24

Finding the Fourth Proportional to 87,431.32, 120,665.46 and 49,711.24

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Solution

The fourth proportional to 87,431.32, 120,665.46 and 49,711.24 is: 68,607.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,431.32 : 120,665.46 = 49,711.24 : x
  2. Step 2: Convert to fraction form
    87,431.32/120,665.46 = 49,711.24/x
  3. Step 3: Cross multiply
    87,431.32x = 120,665.46 × 49,711.24
  4. Step 4: Simplify right side
    87,431.32x = 5,998,429,641.77
  5. Step 5: Solve for x
    x = 5,998,429,641.77/87,431.32
  6. Step 6: Final answer
    x = 68,607.33

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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.