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Finding the Fourth Proportional to 88,912.59, 122,819.18 and 71,134.71

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Solution

The fourth proportional to 88,912.59, 122,819.18 and 71,134.71 is: 98,261.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,912.59 : 122,819.18 = 71,134.71 : x
  2. Step 2: Convert to fraction form
    88,912.59/122,819.18 = 71,134.71/x
  3. Step 3: Cross multiply
    88,912.59x = 122,819.18 × 71,134.71
  4. Step 4: Simplify right side
    88,912.59x = 8,736,706,751.74
  5. Step 5: Solve for x
    x = 8,736,706,751.74/88,912.59
  6. Step 6: Final answer
    x = 98,261.75

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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.