Home / 85,139.91-127,729.83-25,975.56

Finding the Fourth Proportional to 85,139.91, 127,729.83 and 25,975.56

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Solution

The fourth proportional to 85,139.91, 127,729.83 and 25,975.56 is: 38,969.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,139.91 : 127,729.83 = 25,975.56 : x
  2. Step 2: Convert to fraction form
    85,139.91/127,729.83 = 25,975.56/x
  3. Step 3: Cross multiply
    85,139.91x = 127,729.83 × 25,975.56
  4. Step 4: Simplify right side
    85,139.91x = 3,317,853,862.95
  5. Step 5: Solve for x
    x = 3,317,853,862.95/85,139.91
  6. Step 6: Final answer
    x = 38,969.43

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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.