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Finding the Fourth Proportional to 77,877.92, 107,471.46 and 42,067.92

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Solution

The fourth proportional to 77,877.92, 107,471.46 and 42,067.92 is: 58,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,877.92 : 107,471.46 = 42,067.92 : x
  2. Step 2: Convert to fraction form
    77,877.92/107,471.46 = 42,067.92/x
  3. Step 3: Cross multiply
    77,877.92x = 107,471.46 × 42,067.92
  4. Step 4: Simplify right side
    77,877.92x = 4,521,100,781.56
  5. Step 5: Solve for x
    x = 4,521,100,781.56/77,877.92
  6. Step 6: Final answer
    x = 58,053.70

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1.5x scale

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.