Home / 66,729.32-100,064.82-19,971.26

Finding the Fourth Proportional to 66,729.32, 100,064.82 and 19,971.26

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Solution

The fourth proportional to 66,729.32, 100,064.82 and 19,971.26 is: 29,948.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,729.32 : 100,064.82 = 19,971.26 : x
  2. Step 2: Convert to fraction form
    66,729.32/100,064.82 = 19,971.26/x
  3. Step 3: Cross multiply
    66,729.32x = 100,064.82 × 19,971.26
  4. Step 4: Simplify right side
    66,729.32x = 1,998,420,374.55
  5. Step 5: Solve for x
    x = 1,998,420,374.55/66,729.32
  6. Step 6: Final answer
    x = 29,948.16

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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.