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Finding the Fourth Proportional to 56,403.20, 84,604.80 and 38,892.80

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Solution

The fourth proportional to 56,403.20, 84,604.80 and 38,892.80 is: 58,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,403.20 : 84,604.80 = 38,892.80 : x
  2. Step 2: Convert to fraction form
    56,403.20/84,604.80 = 38,892.80/x
  3. Step 3: Cross multiply
    56,403.20x = 84,604.80 × 38,892.80
  4. Step 4: Simplify right side
    56,403.20x = 3,290,517,565.44
  5. Step 5: Solve for x
    x = 3,290,517,565.44/56,403.20
  6. Step 6: Final answer
    x = 58,339.20

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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.