Home / 47,660.16-71,489.78-12,121.58

Finding the Fourth Proportional to 47,660.16, 71,489.78 and 12,121.58

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Solution

The fourth proportional to 47,660.16, 71,489.78 and 12,121.58 is: 18,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,660.16 : 71,489.78 = 12,121.58 : x
  2. Step 2: Convert to fraction form
    47,660.16/71,489.78 = 12,121.58/x
  3. Step 3: Cross multiply
    47,660.16x = 71,489.78 × 12,121.58
  4. Step 4: Simplify right side
    47,660.16x = 866,569,087.45
  5. Step 5: Solve for x
    x = 866,569,087.45/47,660.16
  6. Step 6: Final answer
    x = 18,182.25

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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.