Home / 54,187.20-81,475.20-45,633.60

Finding the Fourth Proportional to 54,187.20, 81,475.20 and 45,633.60

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Solution

The fourth proportional to 54,187.20, 81,475.20 and 45,633.60 is: 68,614.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,187.20 : 81,475.20 = 45,633.60 : x
  2. Step 2: Convert to fraction form
    54,187.20/81,475.20 = 45,633.60/x
  3. Step 3: Cross multiply
    54,187.20x = 81,475.20 × 45,633.60
  4. Step 4: Simplify right side
    54,187.20x = 3,718,006,686.72
  5. Step 5: Solve for x
    x = 3,718,006,686.72/54,187.20
  6. Step 6: Final answer
    x = 68,614.11

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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.