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Finding the Fourth Proportional to 86,034.36, 118,452.78 and 73,408.44

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Solution

The fourth proportional to 86,034.36, 118,452.78 and 73,408.44 is: 101,069.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,034.36 : 118,452.78 = 73,408.44 : x
  2. Step 2: Convert to fraction form
    86,034.36/118,452.78 = 73,408.44/x
  3. Step 3: Cross multiply
    86,034.36x = 118,452.78 × 73,408.44
  4. Step 4: Simplify right side
    86,034.36x = 8,695,433,793.46
  5. Step 5: Solve for x
    x = 8,695,433,793.46/86,034.36
  6. Step 6: Final answer
    x = 101,069.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.