Home / 78,085.26-107,757.66-42,275.58

Finding the Fourth Proportional to 78,085.26, 107,757.66 and 42,275.58

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Solution

The fourth proportional to 78,085.26, 107,757.66 and 42,275.58 is: 58,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,085.26 : 107,757.66 = 42,275.58 : x
  2. Step 2: Convert to fraction form
    78,085.26/107,757.66 = 42,275.58/x
  3. Step 3: Cross multiply
    78,085.26x = 107,757.66 × 42,275.58
  4. Step 4: Simplify right side
    78,085.26x = 4,555,517,575.94
  5. Step 5: Solve for x
    x = 4,555,517,575.94/78,085.26
  6. Step 6: Final answer
    x = 58,340.30

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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.