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Finding the Fourth Proportional to 88,930.74, 122,721.87 and 48,643.61

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Solution

The fourth proportional to 88,930.74, 122,721.87 and 48,643.61 is: 67,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,930.74 : 122,721.87 = 48,643.61 : x
  2. Step 2: Convert to fraction form
    88,930.74/122,721.87 = 48,643.61/x
  3. Step 3: Cross multiply
    88,930.74x = 122,721.87 × 48,643.61
  4. Step 4: Simplify right side
    88,930.74x = 5,969,634,169.14
  5. Step 5: Solve for x
    x = 5,969,634,169.14/88,930.74
  6. Step 6: Final answer
    x = 67,126.78

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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.