Home / 88,909.85-122,740.22-68,721.11

Finding the Fourth Proportional to 88,909.85, 122,740.22 and 68,721.11

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Solution

The fourth proportional to 88,909.85, 122,740.22 and 68,721.11 is: 94,869.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,909.85 : 122,740.22 = 68,721.11 : x
  2. Step 2: Convert to fraction form
    88,909.85/122,740.22 = 68,721.11/x
  3. Step 3: Cross multiply
    88,909.85x = 122,740.22 × 68,721.11
  4. Step 4: Simplify right side
    88,909.85x = 8,434,844,123.29
  5. Step 5: Solve for x
    x = 8,434,844,123.29/88,909.85
  6. Step 6: Final answer
    x = 94,869.62

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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.