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Finding the Fourth Proportional to 83,422.36, 125,134.50 and 28,018.36

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Solution

The fourth proportional to 83,422.36, 125,134.50 and 28,018.36 is: 42,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,422.36 : 125,134.50 = 28,018.36 : x
  2. Step 2: Convert to fraction form
    83,422.36/125,134.50 = 28,018.36/x
  3. Step 3: Cross multiply
    83,422.36x = 125,134.50 × 28,018.36
  4. Step 4: Simplify right side
    83,422.36x = 3,506,063,469.42
  5. Step 5: Solve for x
    x = 3,506,063,469.42/83,422.36
  6. Step 6: Final answer
    x = 42,027.86

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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.