Home / 84,272.32-126,473.76-31,729.60

Finding the Fourth Proportional to 84,272.32, 126,473.76 and 31,729.60

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Solution

The fourth proportional to 84,272.32, 126,473.76 and 31,729.60 is: 47,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,272.32 : 126,473.76 = 31,729.60 : x
  2. Step 2: Convert to fraction form
    84,272.32/126,473.76 = 31,729.60/x
  3. Step 3: Cross multiply
    84,272.32x = 126,473.76 × 31,729.60
  4. Step 4: Simplify right side
    84,272.32x = 4,012,961,815.30
  5. Step 5: Solve for x
    x = 4,012,961,815.30/84,272.32
  6. Step 6: Final answer
    x = 47,618.98

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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.