Home / 87,771.56-131,632.20-28,612.40

Finding the Fourth Proportional to 87,771.56, 131,632.20 and 28,612.40

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Solution

The fourth proportional to 87,771.56, 131,632.20 and 28,612.40 is: 42,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,771.56 : 131,632.20 = 28,612.40 : x
  2. Step 2: Convert to fraction form
    87,771.56/131,632.20 = 28,612.40/x
  3. Step 3: Cross multiply
    87,771.56x = 131,632.20 × 28,612.40
  4. Step 4: Simplify right side
    87,771.56x = 3,766,312,501.12
  5. Step 5: Solve for x
    x = 3,766,312,501.12/87,771.56
  6. Step 6: Final answer
    x = 42,910.40

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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.