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Finding the Fourth Proportional to 115,385, 173,077.50 and 32,279

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Solution

The fourth proportional to 115,385, 173,077.50 and 32,279 is: 48,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,385 : 173,077.50 = 32,279 : x
  2. Step 2: Convert to fraction form
    115,385/173,077.50 = 32,279/x
  3. Step 3: Cross multiply
    115,385x = 173,077.50 × 32,279
  4. Step 4: Simplify right side
    115,385x = 5,586,768,622.50
  5. Step 5: Solve for x
    x = 5,586,768,622.50/115,385
  6. Step 6: Final answer
    x = 48,418.50

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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.