Home / 81,042.28-111,848.92-45,239.72

Finding the Fourth Proportional to 81,042.28, 111,848.92 and 45,239.72

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Solution

The fourth proportional to 81,042.28, 111,848.92 and 45,239.72 is: 62,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.28 : 111,848.92 = 45,239.72 : x
  2. Step 2: Convert to fraction form
    81,042.28/111,848.92 = 45,239.72/x
  3. Step 3: Cross multiply
    81,042.28x = 111,848.92 × 45,239.72
  4. Step 4: Simplify right side
    81,042.28x = 5,060,013,823.10
  5. Step 5: Solve for x
    x = 5,060,013,823.10/81,042.28
  6. Step 6: Final answer
    x = 62,436.72

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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.