Home / 56,613.28-78,139.20-35,107.78

Finding the Fourth Proportional to 56,613.28, 78,139.20 and 35,107.78

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Solution

The fourth proportional to 56,613.28, 78,139.20 and 35,107.78 is: 48,456.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,613.28 : 78,139.20 = 35,107.78 : x
  2. Step 2: Convert to fraction form
    56,613.28/78,139.20 = 35,107.78/x
  3. Step 3: Cross multiply
    56,613.28x = 78,139.20 × 35,107.78
  4. Step 4: Simplify right side
    56,613.28x = 2,743,293,842.98
  5. Step 5: Solve for x
    x = 2,743,293,842.98/56,613.28
  6. Step 6: Final answer
    x = 48,456.72

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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.