Home / 84,255.40-126,329.10-39,824.20

Finding the Fourth Proportional to 84,255.40, 126,329.10 and 39,824.20

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Solution

The fourth proportional to 84,255.40, 126,329.10 and 39,824.20 is: 59,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,255.40 : 126,329.10 = 39,824.20 : x
  2. Step 2: Convert to fraction form
    84,255.40/126,329.10 = 39,824.20/x
  3. Step 3: Cross multiply
    84,255.40x = 126,329.10 × 39,824.20
  4. Step 4: Simplify right side
    84,255.40x = 5,030,955,344.22
  5. Step 5: Solve for x
    x = 5,030,955,344.22/84,255.40
  6. Step 6: Final answer
    x = 59,710.78

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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.