Home / 81,750.23-122,671.92-31,823.85

Finding the Fourth Proportional to 81,750.23, 122,671.92 and 31,823.85

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Solution

The fourth proportional to 81,750.23, 122,671.92 and 31,823.85 is: 47,753.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,750.23 : 122,671.92 = 31,823.85 : x
  2. Step 2: Convert to fraction form
    81,750.23/122,671.92 = 31,823.85/x
  3. Step 3: Cross multiply
    81,750.23x = 122,671.92 × 31,823.85
  4. Step 4: Simplify right side
    81,750.23x = 3,903,892,781.29
  5. Step 5: Solve for x
    x = 3,903,892,781.29/81,750.23
  6. Step 6: Final answer
    x = 47,753.91

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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.