Home / 81,779.20-122,543.62-55,026.11

Finding the Fourth Proportional to 81,779.20, 122,543.62 and 55,026.11

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Solution

The fourth proportional to 81,779.20, 122,543.62 and 55,026.11 is: 82,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,779.20 : 122,543.62 = 55,026.11 : x
  2. Step 2: Convert to fraction form
    81,779.20/122,543.62 = 55,026.11/x
  3. Step 3: Cross multiply
    81,779.20x = 122,543.62 × 55,026.11
  4. Step 4: Simplify right side
    81,779.20x = 6,743,098,882.71
  5. Step 5: Solve for x
    x = 6,743,098,882.71/81,779.20
  6. Step 6: Final answer
    x = 82,454.94

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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.