Home / 80,863.04-121,092-51,191.36

Finding the Fourth Proportional to 80,863.04, 121,092 and 51,191.36

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Solution

The fourth proportional to 80,863.04, 121,092 and 51,191.36 is: 76,658.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,863.04 : 121,092 = 51,191.36 : x
  2. Step 2: Convert to fraction form
    80,863.04/121,092 = 51,191.36/x
  3. Step 3: Cross multiply
    80,863.04x = 121,092 × 51,191.36
  4. Step 4: Simplify right side
    80,863.04x = 6,198,864,165.12
  5. Step 5: Solve for x
    x = 6,198,864,165.12/80,863.04
  6. Step 6: Final answer
    x = 76,658.81

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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.