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Finding the Fourth Proportional to 61,110.89, 91,806.67 and 43,140.44

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Solution

The fourth proportional to 61,110.89, 91,806.67 and 43,140.44 is: 64,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,110.89 : 91,806.67 = 43,140.44 : x
  2. Step 2: Convert to fraction form
    61,110.89/91,806.67 = 43,140.44/x
  3. Step 3: Cross multiply
    61,110.89x = 91,806.67 × 43,140.44
  4. Step 4: Simplify right side
    61,110.89x = 3,960,579,571.85
  5. Step 5: Solve for x
    x = 3,960,579,571.85/61,110.89
  6. Step 6: Final answer
    x = 64,809.72

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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.