Home / 87,621.50-131,706.60-57,827.20

Finding the Fourth Proportional to 87,621.50, 131,706.60 and 57,827.20

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Solution

The fourth proportional to 87,621.50, 131,706.60 and 57,827.20 is: 86,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,621.50 : 131,706.60 = 57,827.20 : x
  2. Step 2: Convert to fraction form
    87,621.50/131,706.60 = 57,827.20/x
  3. Step 3: Cross multiply
    87,621.50x = 131,706.60 × 57,827.20
  4. Step 4: Simplify right side
    87,621.50x = 7,616,223,240.99
  5. Step 5: Solve for x
    x = 7,616,223,240.99/87,621.50
  6. Step 6: Final answer
    x = 86,921.85

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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.