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Finding the Fourth Proportional to 79,672.93, 109,923.82 and 45,211.95

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Solution

The fourth proportional to 79,672.93, 109,923.82 and 45,211.95 is: 62,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,672.93 : 109,923.82 = 45,211.95 : x
  2. Step 2: Convert to fraction form
    79,672.93/109,923.82 = 45,211.95/x
  3. Step 3: Cross multiply
    79,672.93x = 109,923.82 × 45,211.95
  4. Step 4: Simplify right side
    79,672.93x = 4,969,870,140.62
  5. Step 5: Solve for x
    x = 4,969,870,140.62/79,672.93
  6. Step 6: Final answer
    x = 62,378.41

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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.