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Finding the Fourth Proportional to 61,736.15, 85,190.86 and 36,239.78

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Solution

The fourth proportional to 61,736.15, 85,190.86 and 36,239.78 is: 50,007.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,736.15 : 85,190.86 = 36,239.78 : x
  2. Step 2: Convert to fraction form
    61,736.15/85,190.86 = 36,239.78/x
  3. Step 3: Cross multiply
    61,736.15x = 85,190.86 × 36,239.78
  4. Step 4: Simplify right side
    61,736.15x = 3,087,298,024.41
  5. Step 5: Solve for x
    x = 3,087,298,024.41/61,736.15
  6. Step 6: Final answer
    x = 50,007.95

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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.