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Finding the Fourth Proportional to 66,486.20, 99,672.62 and 29,018.26

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Solution

The fourth proportional to 66,486.20, 99,672.62 and 29,018.26 is: 43,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.20 : 99,672.62 = 29,018.26 : x
  2. Step 2: Convert to fraction form
    66,486.20/99,672.62 = 29,018.26/x
  3. Step 3: Cross multiply
    66,486.20x = 99,672.62 × 29,018.26
  4. Step 4: Simplify right side
    66,486.20x = 2,892,326,264.53
  5. Step 5: Solve for x
    x = 2,892,326,264.53/66,486.20
  6. Step 6: Final answer
    x = 43,502.65

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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.