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Finding the Fourth Proportional to 57,751.50, 86,654.93 and 28,153.20

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Solution

The fourth proportional to 57,751.50, 86,654.93 and 28,153.20 is: 42,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,751.50 : 86,654.93 = 28,153.20 : x
  2. Step 2: Convert to fraction form
    57,751.50/86,654.93 = 28,153.20/x
  3. Step 3: Cross multiply
    57,751.50x = 86,654.93 × 28,153.20
  4. Step 4: Simplify right side
    57,751.50x = 2,439,613,575.28
  5. Step 5: Solve for x
    x = 2,439,613,575.28/57,751.50
  6. Step 6: Final answer
    x = 42,243.29

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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.