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Finding the Fourth Proportional to 66,249.60, 91,425.95 and 36,036.54

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Solution

The fourth proportional to 66,249.60, 91,425.95 and 36,036.54 is: 49,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,249.60 : 91,425.95 = 36,036.54 : x
  2. Step 2: Convert to fraction form
    66,249.60/91,425.95 = 36,036.54/x
  3. Step 3: Cross multiply
    66,249.60x = 91,425.95 × 36,036.54
  4. Step 4: Simplify right side
    66,249.60x = 3,294,674,651.46
  5. Step 5: Solve for x
    x = 3,294,674,651.46/66,249.60
  6. Step 6: Final answer
    x = 49,731.24

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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.