Home / 87,618.10-131,427.15-28,455.70

Finding the Fourth Proportional to 87,618.10, 131,427.15 and 28,455.70

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Solution

The fourth proportional to 87,618.10, 131,427.15 and 28,455.70 is: 42,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,618.10 : 131,427.15 = 28,455.70 : x
  2. Step 2: Convert to fraction form
    87,618.10/131,427.15 = 28,455.70/x
  3. Step 3: Cross multiply
    87,618.10x = 131,427.15 × 28,455.70
  4. Step 4: Simplify right side
    87,618.10x = 3,739,851,552.26
  5. Step 5: Solve for x
    x = 3,739,851,552.26/87,618.10
  6. Step 6: Final answer
    x = 42,683.55

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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.