Home / 54,126.40-81,103.20-45,313.60

Finding the Fourth Proportional to 54,126.40, 81,103.20 and 45,313.60

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Solution

The fourth proportional to 54,126.40, 81,103.20 and 45,313.60 is: 67,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,126.40 : 81,103.20 = 45,313.60 : x
  2. Step 2: Convert to fraction form
    54,126.40/81,103.20 = 45,313.60/x
  3. Step 3: Cross multiply
    54,126.40x = 81,103.20 × 45,313.60
  4. Step 4: Simplify right side
    54,126.40x = 3,675,077,963.52
  5. Step 5: Solve for x
    x = 3,675,077,963.52/54,126.40
  6. Step 6: Final answer
    x = 67,898.07

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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.