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Finding the Fourth Proportional to 57,079.80, 85,627.80 and 17,640.36

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Solution

The fourth proportional to 57,079.80, 85,627.80 and 17,640.36 is: 26,463.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,079.80 : 85,627.80 = 17,640.36 : x
  2. Step 2: Convert to fraction form
    57,079.80/85,627.80 = 17,640.36/x
  3. Step 3: Cross multiply
    57,079.80x = 85,627.80 × 17,640.36
  4. Step 4: Simplify right side
    57,079.80x = 1,510,505,218.01
  5. Step 5: Solve for x
    x = 1,510,505,218.01/57,079.80
  6. Step 6: Final answer
    x = 26,463.04

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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.