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Finding the Fourth Proportional to 61,085.55, 84,286.01 and 38,411.37

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Solution

The fourth proportional to 61,085.55, 84,286.01 and 38,411.37 is: 53,000.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,085.55 : 84,286.01 = 38,411.37 : x
  2. Step 2: Convert to fraction form
    61,085.55/84,286.01 = 38,411.37/x
  3. Step 3: Cross multiply
    61,085.55x = 84,286.01 × 38,411.37
  4. Step 4: Simplify right side
    61,085.55x = 3,237,540,923.88
  5. Step 5: Solve for x
    x = 3,237,540,923.88/61,085.55
  6. Step 6: Final answer
    x = 53,000.11

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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.