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Finding the Fourth Proportional to 40,504.38, 60,758.40 and 12,422.40

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Solution

The fourth proportional to 40,504.38, 60,758.40 and 12,422.40 is: 18,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,504.38 : 60,758.40 = 12,422.40 : x
  2. Step 2: Convert to fraction form
    40,504.38/60,758.40 = 12,422.40/x
  3. Step 3: Cross multiply
    40,504.38x = 60,758.40 × 12,422.40
  4. Step 4: Simplify right side
    40,504.38x = 754,765,148.16
  5. Step 5: Solve for x
    x = 754,765,148.16/40,504.38
  6. Step 6: Final answer
    x = 18,634.16

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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.