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Finding the Fourth Proportional to 66,632.68, 91,944.20 and 42,791.64

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Solution

The fourth proportional to 66,632.68, 91,944.20 and 42,791.64 is: 59,046.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,632.68 : 91,944.20 = 42,791.64 : x
  2. Step 2: Convert to fraction form
    66,632.68/91,944.20 = 42,791.64/x
  3. Step 3: Cross multiply
    66,632.68x = 91,944.20 × 42,791.64
  4. Step 4: Simplify right side
    66,632.68x = 3,934,443,106.49
  5. Step 5: Solve for x
    x = 3,934,443,106.49/66,632.68
  6. Step 6: Final answer
    x = 59,046.75

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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.