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Finding the Fourth Proportional to 44,761.86, 67,142.78 and 21,054.66

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Solution

The fourth proportional to 44,761.86, 67,142.78 and 21,054.66 is: 31,581.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,761.86 : 67,142.78 = 21,054.66 : x
  2. Step 2: Convert to fraction form
    44,761.86/67,142.78 = 21,054.66/x
  3. Step 3: Cross multiply
    44,761.86x = 67,142.78 × 21,054.66
  4. Step 4: Simplify right side
    44,761.86x = 1,413,668,404.35
  5. Step 5: Solve for x
    x = 1,413,668,404.35/44,761.86
  6. Step 6: Final answer
    x = 31,581.99

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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.