Home / 80,505.74-120,822.39-42,581.93

Finding the Fourth Proportional to 80,505.74, 120,822.39 and 42,581.93

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Solution

The fourth proportional to 80,505.74, 120,822.39 and 42,581.93 is: 63,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,505.74 : 120,822.39 = 42,581.93 : x
  2. Step 2: Convert to fraction form
    80,505.74/120,822.39 = 42,581.93/x
  3. Step 3: Cross multiply
    80,505.74x = 120,822.39 × 42,581.93
  4. Step 4: Simplify right side
    80,505.74x = 5,144,850,553.41
  5. Step 5: Solve for x
    x = 5,144,850,553.41/80,505.74
  6. Step 6: Final answer
    x = 63,906.63

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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.