Home / 66,540.42-99,719.06-29,131.79

Finding the Fourth Proportional to 66,540.42, 99,719.06 and 29,131.79

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Solution

The fourth proportional to 66,540.42, 99,719.06 and 29,131.79 is: 43,657.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,540.42 : 99,719.06 = 29,131.79 : x
  2. Step 2: Convert to fraction form
    66,540.42/99,719.06 = 29,131.79/x
  3. Step 3: Cross multiply
    66,540.42x = 99,719.06 × 29,131.79
  4. Step 4: Simplify right side
    66,540.42x = 2,904,994,070.66
  5. Step 5: Solve for x
    x = 2,904,994,070.66/66,540.42
  6. Step 6: Final answer
    x = 43,657.59

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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.