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Finding the Fourth Proportional to 85,227.76, 127,857.84 and 38,480.50

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Solution

The fourth proportional to 85,227.76, 127,857.84 and 38,480.50 is: 57,728.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,227.76 : 127,857.84 = 38,480.50 : x
  2. Step 2: Convert to fraction form
    85,227.76/127,857.84 = 38,480.50/x
  3. Step 3: Cross multiply
    85,227.76x = 127,857.84 × 38,480.50
  4. Step 4: Simplify right side
    85,227.76x = 4,920,033,612.12
  5. Step 5: Solve for x
    x = 4,920,033,612.12/85,227.76
  6. Step 6: Final answer
    x = 57,728.06

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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.