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Finding the Fourth Proportional to 66,689.87, 99,982.89 and 33,392.79

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Solution

The fourth proportional to 66,689.87, 99,982.89 and 33,392.79 is: 50,063.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,689.87 : 99,982.89 = 33,392.79 : x
  2. Step 2: Convert to fraction form
    66,689.87/99,982.89 = 33,392.79/x
  3. Step 3: Cross multiply
    66,689.87x = 99,982.89 × 33,392.79
  4. Step 4: Simplify right side
    66,689.87x = 3,338,707,649.36
  5. Step 5: Solve for x
    x = 3,338,707,649.36/66,689.87
  6. Step 6: Final answer
    x = 50,063.19

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1.5x scale

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.