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Finding the Fourth Proportional to 70,671.18, 106,010.43 and 18,081.12

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Solution

The fourth proportional to 70,671.18, 106,010.43 and 18,081.12 is: 27,122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,671.18 : 106,010.43 = 18,081.12 : x
  2. Step 2: Convert to fraction form
    70,671.18/106,010.43 = 18,081.12/x
  3. Step 3: Cross multiply
    70,671.18x = 106,010.43 × 18,081.12
  4. Step 4: Simplify right side
    70,671.18x = 1,916,787,306.08
  5. Step 5: Solve for x
    x = 1,916,787,306.08/70,671.18
  6. Step 6: Final answer
    x = 27,122.62

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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.