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Finding the Fourth Proportional to 58,752.42, 81,120.48 and 36,121.78

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Solution

The fourth proportional to 58,752.42, 81,120.48 and 36,121.78 is: 49,873.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,752.42 : 81,120.48 = 36,121.78 : x
  2. Step 2: Convert to fraction form
    58,752.42/81,120.48 = 36,121.78/x
  3. Step 3: Cross multiply
    58,752.42x = 81,120.48 × 36,121.78
  4. Step 4: Simplify right side
    58,752.42x = 2,930,216,132.05
  5. Step 5: Solve for x
    x = 2,930,216,132.05/58,752.42
  6. Step 6: Final answer
    x = 49,873.96

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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.