Home / 87,679.28-131,506.50-28,515.80

Finding the Fourth Proportional to 87,679.28, 131,506.50 and 28,515.80

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Solution

The fourth proportional to 87,679.28, 131,506.50 and 28,515.80 is: 42,769.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,679.28 : 131,506.50 = 28,515.80 : x
  2. Step 2: Convert to fraction form
    87,679.28/131,506.50 = 28,515.80/x
  3. Step 3: Cross multiply
    87,679.28x = 131,506.50 × 28,515.80
  4. Step 4: Simplify right side
    87,679.28x = 3,750,013,052.70
  5. Step 5: Solve for x
    x = 3,750,013,052.70/87,679.28
  6. Step 6: Final answer
    x = 42,769.66

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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.