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Finding the Fourth Proportional to 32,990.94, 49,422.60 and 20,515.95

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Solution

The fourth proportional to 32,990.94, 49,422.60 and 20,515.95 is: 30,734.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,990.94 : 49,422.60 = 20,515.95 : x
  2. Step 2: Convert to fraction form
    32,990.94/49,422.60 = 20,515.95/x
  3. Step 3: Cross multiply
    32,990.94x = 49,422.60 × 20,515.95
  4. Step 4: Simplify right side
    32,990.94x = 1,013,951,590.47
  5. Step 5: Solve for x
    x = 1,013,951,590.47/32,990.94
  6. Step 6: Final answer
    x = 30,734.24

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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.