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Finding the Fourth Proportional to 85,261.82, 127,902.61 and 28,340.82

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Solution

The fourth proportional to 85,261.82, 127,902.61 and 28,340.82 is: 42,514.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,261.82 : 127,902.61 = 28,340.82 : x
  2. Step 2: Convert to fraction form
    85,261.82/127,902.61 = 28,340.82/x
  3. Step 3: Cross multiply
    85,261.82x = 127,902.61 × 28,340.82
  4. Step 4: Simplify right side
    85,261.82x = 3,624,864,847.54
  5. Step 5: Solve for x
    x = 3,624,864,847.54/85,261.82
  6. Step 6: Final answer
    x = 42,514.51

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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.