Home / 85,138.40-127,727.58-25,974.06

Finding the Fourth Proportional to 85,138.40, 127,727.58 and 25,974.06

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Solution

The fourth proportional to 85,138.40, 127,727.58 and 25,974.06 is: 38,967.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,138.40 : 127,727.58 = 25,974.06 : x
  2. Step 2: Convert to fraction form
    85,138.40/127,727.58 = 25,974.06/x
  3. Step 3: Cross multiply
    85,138.40x = 127,727.58 × 25,974.06
  4. Step 4: Simplify right side
    85,138.40x = 3,317,603,826.57
  5. Step 5: Solve for x
    x = 3,317,603,826.57/85,138.40
  6. Step 6: Final answer
    x = 38,967.19

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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.