Home / 54,289.20-81,275.40-38,737.20

Finding the Fourth Proportional to 54,289.20, 81,275.40 and 38,737.20

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Solution

The fourth proportional to 54,289.20, 81,275.40 and 38,737.20 is: 57,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,289.20 : 81,275.40 = 38,737.20 : x
  2. Step 2: Convert to fraction form
    54,289.20/81,275.40 = 38,737.20/x
  3. Step 3: Cross multiply
    54,289.20x = 81,275.40 × 38,737.20
  4. Step 4: Simplify right side
    54,289.20x = 3,148,381,424.88
  5. Step 5: Solve for x
    x = 3,148,381,424.88/54,289.20
  6. Step 6: Final answer
    x = 57,992.78

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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.