Home / 85,138.32-127,707.48-25,972.68

Finding the Fourth Proportional to 85,138.32, 127,707.48 and 25,972.68

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Solution

The fourth proportional to 85,138.32, 127,707.48 and 25,972.68 is: 38,959.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,138.32 : 127,707.48 = 25,972.68 : x
  2. Step 2: Convert to fraction form
    85,138.32/127,707.48 = 25,972.68/x
  3. Step 3: Cross multiply
    85,138.32x = 127,707.48 × 25,972.68
  4. Step 4: Simplify right side
    85,138.32x = 3,316,905,511.65
  5. Step 5: Solve for x
    x = 3,316,905,511.65/85,138.32
  6. Step 6: Final answer
    x = 38,959.02

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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.