Home / 51,912.61-71,640.08-30,691.69

Finding the Fourth Proportional to 51,912.61, 71,640.08 and 30,691.69

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Solution

The fourth proportional to 51,912.61, 71,640.08 and 30,691.69 is: 42,354.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,912.61 : 71,640.08 = 30,691.69 : x
  2. Step 2: Convert to fraction form
    51,912.61/71,640.08 = 30,691.69/x
  3. Step 3: Cross multiply
    51,912.61x = 71,640.08 × 30,691.69
  4. Step 4: Simplify right side
    51,912.61x = 2,198,755,126.94
  5. Step 5: Solve for x
    x = 2,198,755,126.94/51,912.61
  6. Step 6: Final answer
    x = 42,354.93

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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.