Home / 38,691.20-58,036.80-23,139.20

Finding the Fourth Proportional to 38,691.20, 58,036.80 and 23,139.20

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Solution

The fourth proportional to 38,691.20, 58,036.80 and 23,139.20 is: 34,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,691.20 : 58,036.80 = 23,139.20 : x
  2. Step 2: Convert to fraction form
    38,691.20/58,036.80 = 23,139.20/x
  3. Step 3: Cross multiply
    38,691.20x = 58,036.80 × 23,139.20
  4. Step 4: Simplify right side
    38,691.20x = 1,342,925,122.56
  5. Step 5: Solve for x
    x = 1,342,925,122.56/38,691.20
  6. Step 6: Final answer
    x = 34,708.80

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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.