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Finding the Fourth Proportional to 84,387.60, 126,565.20 and 25,225.20

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Solution

The fourth proportional to 84,387.60, 126,565.20 and 25,225.20 is: 37,832.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,387.60 : 126,565.20 = 25,225.20 : x
  2. Step 2: Convert to fraction form
    84,387.60/126,565.20 = 25,225.20/x
  3. Step 3: Cross multiply
    84,387.60x = 126,565.20 × 25,225.20
  4. Step 4: Simplify right side
    84,387.60x = 3,192,632,483.04
  5. Step 5: Solve for x
    x = 3,192,632,483.04/84,387.60
  6. Step 6: Final answer
    x = 37,832.96

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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.