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Finding the Fourth Proportional to 61,072.68, 91,622.10 and 18,951.84

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Solution

The fourth proportional to 61,072.68, 91,622.10 and 18,951.84 is: 28,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,072.68 : 91,622.10 = 18,951.84 : x
  2. Step 2: Convert to fraction form
    61,072.68/91,622.10 = 18,951.84/x
  3. Step 3: Cross multiply
    61,072.68x = 91,622.10 × 18,951.84
  4. Step 4: Simplify right side
    61,072.68x = 1,736,407,379.66
  5. Step 5: Solve for x
    x = 1,736,407,379.66/61,072.68
  6. Step 6: Final answer
    x = 28,431.82

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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.