Home / 66,515.82-99,771.28-19,767.48

Finding the Fourth Proportional to 66,515.82, 99,771.28 and 19,767.48

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Solution

The fourth proportional to 66,515.82, 99,771.28 and 19,767.48 is: 29,650.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.82 : 99,771.28 = 19,767.48 : x
  2. Step 2: Convert to fraction form
    66,515.82/99,771.28 = 19,767.48/x
  3. Step 3: Cross multiply
    66,515.82x = 99,771.28 × 19,767.48
  4. Step 4: Simplify right side
    66,515.82x = 1,972,226,781.97
  5. Step 5: Solve for x
    x = 1,972,226,781.97/66,515.82
  6. Step 6: Final answer
    x = 29,650.49

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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.