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Finding the Fourth Proportional to 61,087.77, 91,369.22 and 54,380.97

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Solution

The fourth proportional to 61,087.77, 91,369.22 and 54,380.97 is: 81,337.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,087.77 : 91,369.22 = 54,380.97 : x
  2. Step 2: Convert to fraction form
    61,087.77/91,369.22 = 54,380.97/x
  3. Step 3: Cross multiply
    61,087.77x = 91,369.22 × 54,380.97
  4. Step 4: Simplify right side
    61,087.77x = 4,968,746,539.84
  5. Step 5: Solve for x
    x = 4,968,746,539.84/61,087.77
  6. Step 6: Final answer
    x = 81,337.83

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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.