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Finding the Fourth Proportional to 60,728.88, 91,106.80 and 18,614.80

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Solution

The fourth proportional to 60,728.88, 91,106.80 and 18,614.80 is: 27,926.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,728.88 : 91,106.80 = 18,614.80 : x
  2. Step 2: Convert to fraction form
    60,728.88/91,106.80 = 18,614.80/x
  3. Step 3: Cross multiply
    60,728.88x = 91,106.80 × 18,614.80
  4. Step 4: Simplify right side
    60,728.88x = 1,695,934,860.64
  5. Step 5: Solve for x
    x = 1,695,934,860.64/60,728.88
  6. Step 6: Final answer
    x = 27,926.33

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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.