Home / 84,439.32-126,693-31,863.84

Finding the Fourth Proportional to 84,439.32, 126,693 and 31,863.84

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Solution

The fourth proportional to 84,439.32, 126,693 and 31,863.84 is: 47,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,439.32 : 126,693 = 31,863.84 : x
  2. Step 2: Convert to fraction form
    84,439.32/126,693 = 31,863.84/x
  3. Step 3: Cross multiply
    84,439.32x = 126,693 × 31,863.84
  4. Step 4: Simplify right side
    84,439.32x = 4,036,925,481.12
  5. Step 5: Solve for x
    x = 4,036,925,481.12/84,439.32
  6. Step 6: Final answer
    x = 47,808.60

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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.