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Finding the Fourth Proportional to 51,694.40, 71,338.92 and 30,472.40

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Solution

The fourth proportional to 51,694.40, 71,338.92 and 30,472.40 is: 42,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,694.40 : 71,338.92 = 30,472.40 : x
  2. Step 2: Convert to fraction form
    51,694.40/71,338.92 = 30,472.40/x
  3. Step 3: Cross multiply
    51,694.40x = 71,338.92 × 30,472.40
  4. Step 4: Simplify right side
    51,694.40x = 2,173,868,105.81
  5. Step 5: Solve for x
    x = 2,173,868,105.81/51,694.40
  6. Step 6: Final answer
    x = 42,052.29

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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.