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Finding the Fourth Proportional to 61,275.27, 91,920.74 and 21,836.37

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Solution

The fourth proportional to 61,275.27, 91,920.74 and 21,836.37 is: 32,757.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,275.27 : 91,920.74 = 21,836.37 : x
  2. Step 2: Convert to fraction form
    61,275.27/91,920.74 = 21,836.37/x
  3. Step 3: Cross multiply
    61,275.27x = 91,920.74 × 21,836.37
  4. Step 4: Simplify right side
    61,275.27x = 2,007,215,180.13
  5. Step 5: Solve for x
    x = 2,007,215,180.13/61,275.27
  6. Step 6: Final answer
    x = 32,757.35

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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.