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Finding the Fourth Proportional to 32,780.80, 49,084.80 and 25,811.20

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Solution

The fourth proportional to 32,780.80, 49,084.80 and 25,811.20 is: 38,648.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,780.80 : 49,084.80 = 25,811.20 : x
  2. Step 2: Convert to fraction form
    32,780.80/49,084.80 = 25,811.20/x
  3. Step 3: Cross multiply
    32,780.80x = 49,084.80 × 25,811.20
  4. Step 4: Simplify right side
    32,780.80x = 1,266,937,589.76
  5. Step 5: Solve for x
    x = 1,266,937,589.76/32,780.80
  6. Step 6: Final answer
    x = 38,648.77

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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.