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Finding the Fourth Proportional to 81,007.88, 111,790.72 and 45,195.76

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Solution

The fourth proportional to 81,007.88, 111,790.72 and 45,195.76 is: 62,370.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007.88 : 111,790.72 = 45,195.76 : x
  2. Step 2: Convert to fraction form
    81,007.88/111,790.72 = 45,195.76/x
  3. Step 3: Cross multiply
    81,007.88x = 111,790.72 × 45,195.76
  4. Step 4: Simplify right side
    81,007.88x = 5,052,466,551.35
  5. Step 5: Solve for x
    x = 5,052,466,551.35/81,007.88
  6. Step 6: Final answer
    x = 62,370.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.