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Finding the Fourth Proportional to 61,135.74, 84,336.27 and 39,927.42

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Solution

The fourth proportional to 61,135.74, 84,336.27 and 39,927.42 is: 55,079.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,135.74 : 84,336.27 = 39,927.42 : x
  2. Step 2: Convert to fraction form
    61,135.74/84,336.27 = 39,927.42/x
  3. Step 3: Cross multiply
    61,135.74x = 84,336.27 × 39,927.42
  4. Step 4: Simplify right side
    61,135.74x = 3,367,329,673.52
  5. Step 5: Solve for x
    x = 3,367,329,673.52/61,135.74
  6. Step 6: Final answer
    x = 55,079.56

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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.