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Finding the Fourth Proportional to 85,243.52, 127,860.66 and 26,079.20

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Solution

The fourth proportional to 85,243.52, 127,860.66 and 26,079.20 is: 39,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,243.52 : 127,860.66 = 26,079.20 : x
  2. Step 2: Convert to fraction form
    85,243.52/127,860.66 = 26,079.20/x
  3. Step 3: Cross multiply
    85,243.52x = 127,860.66 × 26,079.20
  4. Step 4: Simplify right side
    85,243.52x = 3,334,503,724.27
  5. Step 5: Solve for x
    x = 3,334,503,724.27/85,243.52
  6. Step 6: Final answer
    x = 39,117.39

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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.