Home / 81,399.27-112,295.21-49,115.88

Finding the Fourth Proportional to 81,399.27, 112,295.21 and 49,115.88

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Solution

The fourth proportional to 81,399.27, 112,295.21 and 49,115.88 is: 67,758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399.27 : 112,295.21 = 49,115.88 : x
  2. Step 2: Convert to fraction form
    81,399.27/112,295.21 = 49,115.88/x
  3. Step 3: Cross multiply
    81,399.27x = 112,295.21 × 49,115.88
  4. Step 4: Simplify right side
    81,399.27x = 5,515,478,417.79
  5. Step 5: Solve for x
    x = 5,515,478,417.79/81,399.27
  6. Step 6: Final answer
    x = 67,758.33

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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.