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Finding the Fourth Proportional to 54,008.40, 80,939.70 and 36,188.40

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Solution

The fourth proportional to 54,008.40, 80,939.70 and 36,188.40 is: 54,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,008.40 : 80,939.70 = 36,188.40 : x
  2. Step 2: Convert to fraction form
    54,008.40/80,939.70 = 36,188.40/x
  3. Step 3: Cross multiply
    54,008.40x = 80,939.70 × 36,188.40
  4. Step 4: Simplify right side
    54,008.40x = 2,929,078,239.48
  5. Step 5: Solve for x
    x = 2,929,078,239.48/54,008.40
  6. Step 6: Final answer
    x = 54,233.75

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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.