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Finding the Fourth Proportional to 40,249.40, 60,373.80 and 12,169.40

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Solution

The fourth proportional to 40,249.40, 60,373.80 and 12,169.40 is: 18,254.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,249.40 : 60,373.80 = 12,169.40 : x
  2. Step 2: Convert to fraction form
    40,249.40/60,373.80 = 12,169.40/x
  3. Step 3: Cross multiply
    40,249.40x = 60,373.80 × 12,169.40
  4. Step 4: Simplify right side
    40,249.40x = 734,712,921.72
  5. Step 5: Solve for x
    x = 734,712,921.72/40,249.40
  6. Step 6: Final answer
    x = 18,254.01

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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.