Home / 40,139.52-60,246.64-20,432.82

Finding the Fourth Proportional to 40,139.52, 60,246.64 and 20,432.82

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Solution

The fourth proportional to 40,139.52, 60,246.64 and 20,432.82 is: 30,668.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.52 : 60,246.64 = 20,432.82 : x
  2. Step 2: Convert to fraction form
    40,139.52/60,246.64 = 20,432.82/x
  3. Step 3: Cross multiply
    40,139.52x = 60,246.64 × 20,432.82
  4. Step 4: Simplify right side
    40,139.52x = 1,231,008,648.56
  5. Step 5: Solve for x
    x = 1,231,008,648.56/40,139.52
  6. Step 6: Final answer
    x = 30,668.25

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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.