Home / 84,540.36-126,811.98-31,974.60

Finding the Fourth Proportional to 84,540.36, 126,811.98 and 31,974.60

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Solution

The fourth proportional to 84,540.36, 126,811.98 and 31,974.60 is: 47,962.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,540.36 : 126,811.98 = 31,974.60 : x
  2. Step 2: Convert to fraction form
    84,540.36/126,811.98 = 31,974.60/x
  3. Step 3: Cross multiply
    84,540.36x = 126,811.98 × 31,974.60
  4. Step 4: Simplify right side
    84,540.36x = 4,054,762,335.71
  5. Step 5: Solve for x
    x = 4,054,762,335.71/84,540.36
  6. Step 6: Final answer
    x = 47,962.44

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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.