Home / 51,912.52-71,639.94-30,691.60

Finding the Fourth Proportional to 51,912.52, 71,639.94 and 30,691.60

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Solution

The fourth proportional to 51,912.52, 71,639.94 and 30,691.60 is: 42,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,912.52 : 71,639.94 = 30,691.60 : x
  2. Step 2: Convert to fraction form
    51,912.52/71,639.94 = 30,691.60/x
  3. Step 3: Cross multiply
    51,912.52x = 71,639.94 × 30,691.60
  4. Step 4: Simplify right side
    51,912.52x = 2,198,744,318.50
  5. Step 5: Solve for x
    x = 2,198,744,318.50/51,912.52
  6. Step 6: Final answer
    x = 42,354.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.