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Finding the Fourth Proportional to 87,482.61, 120,729.83 and 49,244.63

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Solution

The fourth proportional to 87,482.61, 120,729.83 and 49,244.63 is: 67,959.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,482.61 : 120,729.83 = 49,244.63 : x
  2. Step 2: Convert to fraction form
    87,482.61/120,729.83 = 49,244.63/x
  3. Step 3: Cross multiply
    87,482.61x = 120,729.83 × 49,244.63
  4. Step 4: Simplify right side
    87,482.61x = 5,945,294,958.44
  5. Step 5: Solve for x
    x = 5,945,294,958.44/87,482.61
  6. Step 6: Final answer
    x = 67,959.73

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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.