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Finding the Fourth Proportional to 72,170.84, 108,253.82 and 25,422.50

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Solution

The fourth proportional to 72,170.84, 108,253.82 and 25,422.50 is: 38,132.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.84 : 108,253.82 = 25,422.50 : x
  2. Step 2: Convert to fraction form
    72,170.84/108,253.82 = 25,422.50/x
  3. Step 3: Cross multiply
    72,170.84x = 108,253.82 × 25,422.50
  4. Step 4: Simplify right side
    72,170.84x = 2,752,082,738.95
  5. Step 5: Solve for x
    x = 2,752,082,738.95/72,170.84
  6. Step 6: Final answer
    x = 38,132.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.