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Finding the Fourth Proportional to 66,484.44, 91,755.59 and 40,658.09

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Solution

The fourth proportional to 66,484.44, 91,755.59 and 40,658.09 is: 56,112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,484.44 : 91,755.59 = 40,658.09 : x
  2. Step 2: Convert to fraction form
    66,484.44/91,755.59 = 40,658.09/x
  3. Step 3: Cross multiply
    66,484.44x = 91,755.59 × 40,658.09
  4. Step 4: Simplify right side
    66,484.44x = 3,730,606,374.15
  5. Step 5: Solve for x
    x = 3,730,606,374.15/66,484.44
  6. Step 6: Final answer
    x = 56,112.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.