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Finding the Fourth Proportional to 89,034.50, 122,867.62 and 49,290.50

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Solution

The fourth proportional to 89,034.50, 122,867.62 and 49,290.50 is: 68,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,034.50 : 122,867.62 = 49,290.50 : x
  2. Step 2: Convert to fraction form
    89,034.50/122,867.62 = 49,290.50/x
  3. Step 3: Cross multiply
    89,034.50x = 122,867.62 × 49,290.50
  4. Step 4: Simplify right side
    89,034.50x = 6,056,206,423.61
  5. Step 5: Solve for x
    x = 6,056,206,423.61/89,034.50
  6. Step 6: Final answer
    x = 68,020.90

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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.