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Finding the Fourth Proportional to 103,034.70, 154,572.21 and 43,869.90

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Solution

The fourth proportional to 103,034.70, 154,572.21 and 43,869.90 is: 65,813.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,034.70 : 154,572.21 = 43,869.90 : x
  2. Step 2: Convert to fraction form
    103,034.70/154,572.21 = 43,869.90/x
  3. Step 3: Cross multiply
    103,034.70x = 154,572.21 × 43,869.90
  4. Step 4: Simplify right side
    103,034.70x = 6,781,067,395.48
  5. Step 5: Solve for x
    x = 6,781,067,395.48/103,034.70
  6. Step 6: Final answer
    x = 65,813.43

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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.