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Finding the Fourth Proportional to 72,512.70, 108,772 and 34,542.45

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Solution

The fourth proportional to 72,512.70, 108,772 and 34,542.45 is: 51,815.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,512.70 : 108,772 = 34,542.45 : x
  2. Step 2: Convert to fraction form
    72,512.70/108,772 = 34,542.45/x
  3. Step 3: Cross multiply
    72,512.70x = 108,772 × 34,542.45
  4. Step 4: Simplify right side
    72,512.70x = 3,757,251,371.40
  5. Step 5: Solve for x
    x = 3,757,251,371.40/72,512.70
  6. Step 6: Final answer
    x = 51,815.08

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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.