Home / 82,281.11-123,421.66-19,951.61

Finding the Fourth Proportional to 82,281.11, 123,421.66 and 19,951.61

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Solution

The fourth proportional to 82,281.11, 123,421.66 and 19,951.61 is: 29,927.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,281.11 : 123,421.66 = 19,951.61 : x
  2. Step 2: Convert to fraction form
    82,281.11/123,421.66 = 19,951.61/x
  3. Step 3: Cross multiply
    82,281.11x = 123,421.66 × 19,951.61
  4. Step 4: Simplify right side
    82,281.11x = 2,462,460,158.89
  5. Step 5: Solve for x
    x = 2,462,460,158.89/82,281.11
  6. Step 6: Final answer
    x = 29,927.41

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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.