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Finding the Fourth Proportional to 72,521.75, 100,182.80 and 69,022.55

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Solution

The fourth proportional to 72,521.75, 100,182.80 and 69,022.55 is: 95,348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,521.75 : 100,182.80 = 69,022.55 : x
  2. Step 2: Convert to fraction form
    72,521.75/100,182.80 = 69,022.55/x
  3. Step 3: Cross multiply
    72,521.75x = 100,182.80 × 69,022.55
  4. Step 4: Simplify right side
    72,521.75x = 6,914,872,745.15
  5. Step 5: Solve for x
    x = 6,914,872,745.15/72,521.75
  6. Step 6: Final answer
    x = 95,348.95

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1.5x scale

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.