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Finding the Fourth Proportional to 85,241.71, 127,941.33 and 43,151.32

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Solution

The fourth proportional to 85,241.71, 127,941.33 and 43,151.32 is: 64,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,241.71 : 127,941.33 = 43,151.32 : x
  2. Step 2: Convert to fraction form
    85,241.71/127,941.33 = 43,151.32/x
  3. Step 3: Cross multiply
    85,241.71x = 127,941.33 × 43,151.32
  4. Step 4: Simplify right side
    85,241.71x = 5,520,837,272.06
  5. Step 5: Solve for x
    x = 5,520,837,272.06/85,241.71
  6. Step 6: Final answer
    x = 64,766.85

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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.