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Finding the Fourth Proportional to 88,924.75, 122,780.42 and 54,979.78

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Solution

The fourth proportional to 88,924.75, 122,780.42 and 54,979.78 is: 75,911.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,924.75 : 122,780.42 = 54,979.78 : x
  2. Step 2: Convert to fraction form
    88,924.75/122,780.42 = 54,979.78/x
  3. Step 3: Cross multiply
    88,924.75x = 122,780.42 × 54,979.78
  4. Step 4: Simplify right side
    88,924.75x = 6,750,440,479.91
  5. Step 5: Solve for x
    x = 6,750,440,479.91/88,924.75
  6. Step 6: Final answer
    x = 75,911.83

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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.