Home / 74,226.25-102,432.45-40,234.78

Finding the Fourth Proportional to 74,226.25, 102,432.45 and 40,234.78

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Solution

The fourth proportional to 74,226.25, 102,432.45 and 40,234.78 is: 55,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,226.25 : 102,432.45 = 40,234.78 : x
  2. Step 2: Convert to fraction form
    74,226.25/102,432.45 = 40,234.78/x
  3. Step 3: Cross multiply
    74,226.25x = 102,432.45 × 40,234.78
  4. Step 4: Simplify right side
    74,226.25x = 4,121,347,090.61
  5. Step 5: Solve for x
    x = 4,121,347,090.61/74,226.25
  6. Step 6: Final answer
    x = 55,524.12

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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.