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Finding the Fourth Proportional to 32,372.80, 48,530.40 and 19,211.20

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Solution

The fourth proportional to 32,372.80, 48,530.40 and 19,211.20 is: 28,799.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,372.80 : 48,530.40 = 19,211.20 : x
  2. Step 2: Convert to fraction form
    32,372.80/48,530.40 = 19,211.20/x
  3. Step 3: Cross multiply
    32,372.80x = 48,530.40 × 19,211.20
  4. Step 4: Simplify right side
    32,372.80x = 932,327,220.48
  5. Step 5: Solve for x
    x = 932,327,220.48/32,372.80
  6. Step 6: Final answer
    x = 28,799.71

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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.