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Finding the Fourth Proportional to 86,671.20, 130,006.65 and 32,645.97

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Solution

The fourth proportional to 86,671.20, 130,006.65 and 32,645.97 is: 48,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,671.20 : 130,006.65 = 32,645.97 : x
  2. Step 2: Convert to fraction form
    86,671.20/130,006.65 = 32,645.97/x
  3. Step 3: Cross multiply
    86,671.20x = 130,006.65 × 32,645.97
  4. Step 4: Simplify right side
    86,671.20x = 4,244,193,195.70
  5. Step 5: Solve for x
    x = 4,244,193,195.70/86,671.20
  6. Step 6: Final answer
    x = 48,968.90

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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.