Home / 80,729.04-121,092.16-36,324.36

Finding the Fourth Proportional to 80,729.04, 121,092.16 and 36,324.36

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Solution

The fourth proportional to 80,729.04, 121,092.16 and 36,324.36 is: 54,485.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,729.04 : 121,092.16 = 36,324.36 : x
  2. Step 2: Convert to fraction form
    80,729.04/121,092.16 = 36,324.36/x
  3. Step 3: Cross multiply
    80,729.04x = 121,092.16 × 36,324.36
  4. Step 4: Simplify right side
    80,729.04x = 4,398,595,213.02
  5. Step 5: Solve for x
    x = 4,398,595,213.02/80,729.04
  6. Step 6: Final answer
    x = 54,485.91

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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.