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Finding the Fourth Proportional to 80,953.86, 121,429.76 and 36,549.55

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Solution

The fourth proportional to 80,953.86, 121,429.76 and 36,549.55 is: 54,823.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.86 : 121,429.76 = 36,549.55 : x
  2. Step 2: Convert to fraction form
    80,953.86/121,429.76 = 36,549.55/x
  3. Step 3: Cross multiply
    80,953.86x = 121,429.76 × 36,549.55
  4. Step 4: Simplify right side
    80,953.86x = 4,438,203,497.96
  5. Step 5: Solve for x
    x = 4,438,203,497.96/80,953.86
  6. Step 6: Final answer
    x = 54,823.87

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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.