Home / 80,406.23-120,592.40-51,857.66

Finding the Fourth Proportional to 80,406.23, 120,592.40 and 51,857.66

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Solution

The fourth proportional to 80,406.23, 120,592.40 and 51,857.66 is: 77,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,406.23 : 120,592.40 = 51,857.66 : x
  2. Step 2: Convert to fraction form
    80,406.23/120,592.40 = 51,857.66/x
  3. Step 3: Cross multiply
    80,406.23x = 120,592.40 × 51,857.66
  4. Step 4: Simplify right side
    80,406.23x = 6,253,639,677.78
  5. Step 5: Solve for x
    x = 6,253,639,677.78/80,406.23
  6. Step 6: Final answer
    x = 77,775.56

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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.