Home / 41,128.80-61,693.20-17,781.60

Finding the Fourth Proportional to 41,128.80, 61,693.20 and 17,781.60

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Solution

The fourth proportional to 41,128.80, 61,693.20 and 17,781.60 is: 26,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,128.80 : 61,693.20 = 17,781.60 : x
  2. Step 2: Convert to fraction form
    41,128.80/61,693.20 = 17,781.60/x
  3. Step 3: Cross multiply
    41,128.80x = 61,693.20 × 17,781.60
  4. Step 4: Simplify right side
    41,128.80x = 1,097,003,805.12
  5. Step 5: Solve for x
    x = 1,097,003,805.12/41,128.80
  6. Step 6: Final answer
    x = 26,672.40

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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.