Home / 83,565.12-115,325.76-47,760.48

Finding the Fourth Proportional to 83,565.12, 115,325.76 and 47,760.48

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Solution

The fourth proportional to 83,565.12, 115,325.76 and 47,760.48 is: 65,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,565.12 : 115,325.76 = 47,760.48 : x
  2. Step 2: Convert to fraction form
    83,565.12/115,325.76 = 47,760.48/x
  3. Step 3: Cross multiply
    83,565.12x = 115,325.76 × 47,760.48
  4. Step 4: Simplify right side
    83,565.12x = 5,508,013,653.96
  5. Step 5: Solve for x
    x = 5,508,013,653.96/83,565.12
  6. Step 6: Final answer
    x = 65,912.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.