Home / 66,438.33-99,640.45-19,680.27

Finding the Fourth Proportional to 66,438.33, 99,640.45 and 19,680.27

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Solution

The fourth proportional to 66,438.33, 99,640.45 and 19,680.27 is: 29,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438.33 : 99,640.45 = 19,680.27 : x
  2. Step 2: Convert to fraction form
    66,438.33/99,640.45 = 19,680.27/x
  3. Step 3: Cross multiply
    66,438.33x = 99,640.45 × 19,680.27
  4. Step 4: Simplify right side
    66,438.33x = 1,960,950,958.92
  5. Step 5: Solve for x
    x = 1,960,950,958.92/66,438.33
  6. Step 6: Final answer
    x = 29,515.36

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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.