Home / 87,984.10-131,976.15-21,423.70

Finding the Fourth Proportional to 87,984.10, 131,976.15 and 21,423.70

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Solution

The fourth proportional to 87,984.10, 131,976.15 and 21,423.70 is: 32,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,984.10 : 131,976.15 = 21,423.70 : x
  2. Step 2: Convert to fraction form
    87,984.10/131,976.15 = 21,423.70/x
  3. Step 3: Cross multiply
    87,984.10x = 131,976.15 × 21,423.70
  4. Step 4: Simplify right side
    87,984.10x = 2,827,417,444.76
  5. Step 5: Solve for x
    x = 2,827,417,444.76/87,984.10
  6. Step 6: Final answer
    x = 32,135.55

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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.