Home / 54,179.20-81,268.80-38,432.80

Finding the Fourth Proportional to 54,179.20, 81,268.80 and 38,432.80

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Solution

The fourth proportional to 54,179.20, 81,268.80 and 38,432.80 is: 57,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,179.20 : 81,268.80 = 38,432.80 : x
  2. Step 2: Convert to fraction form
    54,179.20/81,268.80 = 38,432.80/x
  3. Step 3: Cross multiply
    54,179.20x = 81,268.80 × 38,432.80
  4. Step 4: Simplify right side
    54,179.20x = 3,123,387,536.64
  5. Step 5: Solve for x
    x = 3,123,387,536.64/54,179.20
  6. Step 6: Final answer
    x = 57,649.20

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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.