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Finding the Fourth Proportional to 72,524.78, 100,082.59 and 40,257.49

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Solution

The fourth proportional to 72,524.78, 100,082.59 and 40,257.49 is: 55,554.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,524.78 : 100,082.59 = 40,257.49 : x
  2. Step 2: Convert to fraction form
    72,524.78/100,082.59 = 40,257.49/x
  3. Step 3: Cross multiply
    72,524.78x = 100,082.59 × 40,257.49
  4. Step 4: Simplify right side
    72,524.78x = 4,029,073,866.10
  5. Step 5: Solve for x
    x = 4,029,073,866.10/72,524.78
  6. Step 6: Final answer
    x = 55,554.44

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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.