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Finding the Fourth Proportional to 32,689.60, 49,034.40 and 18,827.20

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Solution

The fourth proportional to 32,689.60, 49,034.40 and 18,827.20 is: 28,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,689.60 : 49,034.40 = 18,827.20 : x
  2. Step 2: Convert to fraction form
    32,689.60/49,034.40 = 18,827.20/x
  3. Step 3: Cross multiply
    32,689.60x = 49,034.40 × 18,827.20
  4. Step 4: Simplify right side
    32,689.60x = 923,180,455.68
  5. Step 5: Solve for x
    x = 923,180,455.68/32,689.60
  6. Step 6: Final answer
    x = 28,240.80

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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.