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Finding the Fourth Proportional to 37,172, 55,763.20 and 10,878.64

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Solution

The fourth proportional to 37,172, 55,763.20 and 10,878.64 is: 16,319.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,172 : 55,763.20 = 10,878.64 : x
  2. Step 2: Convert to fraction form
    37,172/55,763.20 = 10,878.64/x
  3. Step 3: Cross multiply
    37,172x = 55,763.20 × 10,878.64
  4. Step 4: Simplify right side
    37,172x = 606,627,778.05
  5. Step 5: Solve for x
    x = 606,627,778.05/37,172
  6. Step 6: Final answer
    x = 16,319.48

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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.