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Finding the Fourth Proportional to 66,253.76, 91,429.29 and 36,038.43

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Solution

The fourth proportional to 66,253.76, 91,429.29 and 36,038.43 is: 49,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,253.76 : 91,429.29 = 36,038.43 : x
  2. Step 2: Convert to fraction form
    66,253.76/91,429.29 = 36,038.43/x
  3. Step 3: Cross multiply
    66,253.76x = 91,429.29 × 36,038.43
  4. Step 4: Simplify right side
    66,253.76x = 3,294,968,067.61
  5. Step 5: Solve for x
    x = 3,294,968,067.61/66,253.76
  6. Step 6: Final answer
    x = 49,732.55

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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.