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Finding the Fourth Proportional to 77,951.76, 107,565.87 and 43,965.54

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Solution

The fourth proportional to 77,951.76, 107,565.87 and 43,965.54 is: 60,668.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,951.76 : 107,565.87 = 43,965.54 : x
  2. Step 2: Convert to fraction form
    77,951.76/107,565.87 = 43,965.54/x
  3. Step 3: Cross multiply
    77,951.76x = 107,565.87 × 43,965.54
  4. Step 4: Simplify right side
    77,951.76x = 4,729,191,560.12
  5. Step 5: Solve for x
    x = 4,729,191,560.12/77,951.76
  6. Step 6: Final answer
    x = 60,668.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.