Home / 79,139.68-109,212.45-45,148.10

Finding the Fourth Proportional to 79,139.68, 109,212.45 and 45,148.10

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Solution

The fourth proportional to 79,139.68, 109,212.45 and 45,148.10 is: 62,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.68 : 109,212.45 = 45,148.10 : x
  2. Step 2: Convert to fraction form
    79,139.68/109,212.45 = 45,148.10/x
  3. Step 3: Cross multiply
    79,139.68x = 109,212.45 × 45,148.10
  4. Step 4: Simplify right side
    79,139.68x = 4,930,734,613.85
  5. Step 5: Solve for x
    x = 4,930,734,613.85/79,139.68
  6. Step 6: Final answer
    x = 62,304.20

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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.