Home / 78,965.28-108,939.24-51,733.60

Finding the Fourth Proportional to 78,965.28, 108,939.24 and 51,733.60

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Solution

The fourth proportional to 78,965.28, 108,939.24 and 51,733.60 is: 71,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,965.28 : 108,939.24 = 51,733.60 : x
  2. Step 2: Convert to fraction form
    78,965.28/108,939.24 = 51,733.60/x
  3. Step 3: Cross multiply
    78,965.28x = 108,939.24 × 51,733.60
  4. Step 4: Simplify right side
    78,965.28x = 5,635,819,066.46
  5. Step 5: Solve for x
    x = 5,635,819,066.46/78,965.28
  6. Step 6: Final answer
    x = 71,370.85

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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.