Home / 78,322.75-108,087.35-42,512.65

Finding the Fourth Proportional to 78,322.75, 108,087.35 and 42,512.65

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Solution

The fourth proportional to 78,322.75, 108,087.35 and 42,512.65 is: 58,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.75 : 108,087.35 = 42,512.65 : x
  2. Step 2: Convert to fraction form
    78,322.75/108,087.35 = 42,512.65/x
  3. Step 3: Cross multiply
    78,322.75x = 108,087.35 × 42,512.65
  4. Step 4: Simplify right side
    78,322.75x = 4,595,079,197.20
  5. Step 5: Solve for x
    x = 4,595,079,197.20/78,322.75
  6. Step 6: Final answer
    x = 58,668.51

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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.