Home / 78,370.28-108,151.14-42,559.88

Finding the Fourth Proportional to 78,370.28, 108,151.14 and 42,559.88

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Solution

The fourth proportional to 78,370.28, 108,151.14 and 42,559.88 is: 58,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.28 : 108,151.14 = 42,559.88 : x
  2. Step 2: Convert to fraction form
    78,370.28/108,151.14 = 42,559.88/x
  3. Step 3: Cross multiply
    78,370.28x = 108,151.14 × 42,559.88
  4. Step 4: Simplify right side
    78,370.28x = 4,602,899,540.26
  5. Step 5: Solve for x
    x = 4,602,899,540.26/78,370.28
  6. Step 6: Final answer
    x = 58,732.72

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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.