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Finding the Fourth Proportional to 100,627.05, 150,981.87 and 53,229.47

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Solution

The fourth proportional to 100,627.05, 150,981.87 and 53,229.47 is: 79,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,627.05 : 150,981.87 = 53,229.47 : x
  2. Step 2: Convert to fraction form
    100,627.05/150,981.87 = 53,229.47/x
  3. Step 3: Cross multiply
    100,627.05x = 150,981.87 × 53,229.47
  4. Step 4: Simplify right side
    100,627.05x = 8,036,684,164.80
  5. Step 5: Solve for x
    x = 8,036,684,164.80/100,627.05
  6. Step 6: Final answer
    x = 79,866.04

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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.