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Finding the Fourth Proportional to 36,972, 55,465.32 and 18,914.70

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Solution

The fourth proportional to 36,972, 55,465.32 and 18,914.70 is: 28,375.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,972 : 55,465.32 = 18,914.70 : x
  2. Step 2: Convert to fraction form
    36,972/55,465.32 = 18,914.70/x
  3. Step 3: Cross multiply
    36,972x = 55,465.32 × 18,914.70
  4. Step 4: Simplify right side
    36,972x = 1,049,109,888.20
  5. Step 5: Solve for x
    x = 1,049,109,888.20/36,972
  6. Step 6: Final answer
    x = 28,375.79

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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.