Home / 80,937.10-121,296.30-54,207.10

Finding the Fourth Proportional to 80,937.10, 121,296.30 and 54,207.10

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Solution

The fourth proportional to 80,937.10, 121,296.30 and 54,207.10 is: 81,237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.10 : 121,296.30 = 54,207.10 : x
  2. Step 2: Convert to fraction form
    80,937.10/121,296.30 = 54,207.10/x
  3. Step 3: Cross multiply
    80,937.10x = 121,296.30 × 54,207.10
  4. Step 4: Simplify right side
    80,937.10x = 6,575,120,663.73
  5. Step 5: Solve for x
    x = 6,575,120,663.73/80,937.10
  6. Step 6: Final answer
    x = 81,237.41

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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.