Home / 87,543.60-131,315.40-28,381.20

Finding the Fourth Proportional to 87,543.60, 131,315.40 and 28,381.20

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Solution

The fourth proportional to 87,543.60, 131,315.40 and 28,381.20 is: 42,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,543.60 : 131,315.40 = 28,381.20 : x
  2. Step 2: Convert to fraction form
    87,543.60/131,315.40 = 28,381.20/x
  3. Step 3: Cross multiply
    87,543.60x = 131,315.40 × 28,381.20
  4. Step 4: Simplify right side
    87,543.60x = 3,726,888,630.48
  5. Step 5: Solve for x
    x = 3,726,888,630.48/87,543.60
  6. Step 6: Final answer
    x = 42,571.80

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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.