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Finding the Fourth Proportional to 61,161.79, 91,726.08 and 16,778.04

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Solution

The fourth proportional to 61,161.79, 91,726.08 and 16,778.04 is: 25,162.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,161.79 : 91,726.08 = 16,778.04 : x
  2. Step 2: Convert to fraction form
    61,161.79/91,726.08 = 16,778.04/x
  3. Step 3: Cross multiply
    61,161.79x = 91,726.08 × 16,778.04
  4. Step 4: Simplify right side
    61,161.79x = 1,538,984,183.26
  5. Step 5: Solve for x
    x = 1,538,984,183.26/61,161.79
  6. Step 6: Final answer
    x = 25,162.51

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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.