Home / 51,645.70-71,286.33-30,431.80

Finding the Fourth Proportional to 51,645.70, 71,286.33 and 30,431.80

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Solution

The fourth proportional to 51,645.70, 71,286.33 and 30,431.80 is: 42,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,645.70 : 71,286.33 = 30,431.80 : x
  2. Step 2: Convert to fraction form
    51,645.70/71,286.33 = 30,431.80/x
  3. Step 3: Cross multiply
    51,645.70x = 71,286.33 × 30,431.80
  4. Step 4: Simplify right side
    51,645.70x = 2,169,371,337.29
  5. Step 5: Solve for x
    x = 2,169,371,337.29/51,645.70
  6. Step 6: Final answer
    x = 42,004.88

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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.