Home / 66,640.12-99,987.88-29,180.92

Finding the Fourth Proportional to 66,640.12, 99,987.88 and 29,180.92

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Solution

The fourth proportional to 66,640.12, 99,987.88 and 29,180.92 is: 43,783.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.12 : 99,987.88 = 29,180.92 : x
  2. Step 2: Convert to fraction form
    66,640.12/99,987.88 = 29,180.92/x
  3. Step 3: Cross multiply
    66,640.12x = 99,987.88 × 29,180.92
  4. Step 4: Simplify right side
    66,640.12x = 2,917,738,327.25
  5. Step 5: Solve for x
    x = 2,917,738,327.25/66,640.12
  6. Step 6: Final answer
    x = 43,783.51

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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.