Home / 87,439.50-120,666.51-49,713.75

Finding the Fourth Proportional to 87,439.50, 120,666.51 and 49,713.75

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Solution

The fourth proportional to 87,439.50, 120,666.51 and 49,713.75 is: 68,604.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,439.50 : 120,666.51 = 49,713.75 : x
  2. Step 2: Convert to fraction form
    87,439.50/120,666.51 = 49,713.75/x
  3. Step 3: Cross multiply
    87,439.50x = 120,666.51 × 49,713.75
  4. Step 4: Simplify right side
    87,439.50x = 5,998,784,711.51
  5. Step 5: Solve for x
    x = 5,998,784,711.51/87,439.50
  6. Step 6: Final answer
    x = 68,604.98

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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.