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Finding the Fourth Proportional to 86,122.68, 129,183.84 and 23,793

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Solution

The fourth proportional to 86,122.68, 129,183.84 and 23,793 is: 35,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,122.68 : 129,183.84 = 23,793 : x
  2. Step 2: Convert to fraction form
    86,122.68/129,183.84 = 23,793/x
  3. Step 3: Cross multiply
    86,122.68x = 129,183.84 × 23,793
  4. Step 4: Simplify right side
    86,122.68x = 3,073,671,105.12
  5. Step 5: Solve for x
    x = 3,073,671,105.12/86,122.68
  6. Step 6: Final answer
    x = 35,689.45

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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.