Home / 84,121.49-126,164.41-31,534.85

Finding the Fourth Proportional to 84,121.49, 126,164.41 and 31,534.85

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Solution

The fourth proportional to 84,121.49, 126,164.41 and 31,534.85 is: 47,295.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,121.49 : 126,164.41 = 31,534.85 : x
  2. Step 2: Convert to fraction form
    84,121.49/126,164.41 = 31,534.85/x
  3. Step 3: Cross multiply
    84,121.49x = 126,164.41 × 31,534.85
  4. Step 4: Simplify right side
    84,121.49x = 3,978,575,744.69
  5. Step 5: Solve for x
    x = 3,978,575,744.69/84,121.49
  6. Step 6: Final answer
    x = 47,295.59

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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.