Home / 84,628.68-126,951.42-31,334.88

Finding the Fourth Proportional to 84,628.68, 126,951.42 and 31,334.88

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Solution

The fourth proportional to 84,628.68, 126,951.42 and 31,334.88 is: 47,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,628.68 : 126,951.42 = 31,334.88 : x
  2. Step 2: Convert to fraction form
    84,628.68/126,951.42 = 31,334.88/x
  3. Step 3: Cross multiply
    84,628.68x = 126,951.42 × 31,334.88
  4. Step 4: Simplify right side
    84,628.68x = 3,978,007,511.53
  5. Step 5: Solve for x
    x = 3,978,007,511.53/84,628.68
  6. Step 6: Final answer
    x = 47,005.43

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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.