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Finding the Fourth Proportional to 54,126.40, 81,189.60 and 48,488.80

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Solution

The fourth proportional to 54,126.40, 81,189.60 and 48,488.80 is: 72,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,126.40 : 81,189.60 = 48,488.80 : x
  2. Step 2: Convert to fraction form
    54,126.40/81,189.60 = 48,488.80/x
  3. Step 3: Cross multiply
    54,126.40x = 81,189.60 × 48,488.80
  4. Step 4: Simplify right side
    54,126.40x = 3,936,786,276.48
  5. Step 5: Solve for x
    x = 3,936,786,276.48/54,126.40
  6. Step 6: Final answer
    x = 72,733.20

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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.