Home / 78,395.38-108,230.51-51,615.73

Finding the Fourth Proportional to 78,395.38, 108,230.51 and 51,615.73

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Solution

The fourth proportional to 78,395.38, 108,230.51 and 51,615.73 is: 71,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,395.38 : 108,230.51 = 51,615.73 : x
  2. Step 2: Convert to fraction form
    78,395.38/108,230.51 = 51,615.73/x
  3. Step 3: Cross multiply
    78,395.38x = 108,230.51 × 51,615.73
  4. Step 4: Simplify right side
    78,395.38x = 5,586,396,781.92
  5. Step 5: Solve for x
    x = 5,586,396,781.92/78,395.38
  6. Step 6: Final answer
    x = 71,259.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.