Home / 81,001.74-121,543.62-54,651.12

Finding the Fourth Proportional to 81,001.74, 121,543.62 and 54,651.12

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Solution

The fourth proportional to 81,001.74, 121,543.62 and 54,651.12 is: 82,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,001.74 : 121,543.62 = 54,651.12 : x
  2. Step 2: Convert to fraction form
    81,001.74/121,543.62 = 54,651.12/x
  3. Step 3: Cross multiply
    81,001.74x = 121,543.62 × 54,651.12
  4. Step 4: Simplify right side
    81,001.74x = 6,642,494,961.85
  5. Step 5: Solve for x
    x = 6,642,494,961.85/81,001.74
  6. Step 6: Final answer
    x = 82,004.35

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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.