Home / 84,311.28-126,578.09-77,348.42

Finding the Fourth Proportional to 84,311.28, 126,578.09 and 77,348.42

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Solution

The fourth proportional to 84,311.28, 126,578.09 and 77,348.42 is: 116,124.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,311.28 : 126,578.09 = 77,348.42 : x
  2. Step 2: Convert to fraction form
    84,311.28/126,578.09 = 77,348.42/x
  3. Step 3: Cross multiply
    84,311.28x = 126,578.09 × 77,348.42
  4. Step 4: Simplify right side
    84,311.28x = 9,790,615,303.27
  5. Step 5: Solve for x
    x = 9,790,615,303.27/84,311.28
  6. Step 6: Final answer
    x = 116,124.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.