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Finding the Fourth Proportional to 84,391.77, 126,587.83 and 34,471.90

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Solution

The fourth proportional to 84,391.77, 126,587.83 and 34,471.90 is: 51,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,391.77 : 126,587.83 = 34,471.90 : x
  2. Step 2: Convert to fraction form
    84,391.77/126,587.83 = 34,471.90/x
  3. Step 3: Cross multiply
    84,391.77x = 126,587.83 × 34,471.90
  4. Step 4: Simplify right side
    84,391.77x = 4,363,723,582.41
  5. Step 5: Solve for x
    x = 4,363,723,582.41/84,391.77
  6. Step 6: Final answer
    x = 51,707.93

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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.