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Finding the Fourth Proportional to 40,096.78, 60,145.17 and 12,394.78

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Solution

The fourth proportional to 40,096.78, 60,145.17 and 12,394.78 is: 18,592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,096.78 : 60,145.17 = 12,394.78 : x
  2. Step 2: Convert to fraction form
    40,096.78/60,145.17 = 12,394.78/x
  3. Step 3: Cross multiply
    40,096.78x = 60,145.17 × 12,394.78
  4. Step 4: Simplify right side
    40,096.78x = 745,486,150.21
  5. Step 5: Solve for x
    x = 745,486,150.21/40,096.78
  6. Step 6: Final answer
    x = 18,592.17

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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.