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Finding the Fourth Proportional to 86,128.24, 118,850.84 and 48,408.24

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Solution

The fourth proportional to 86,128.24, 118,850.84 and 48,408.24 is: 66,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,128.24 : 118,850.84 = 48,408.24 : x
  2. Step 2: Convert to fraction form
    86,128.24/118,850.84 = 48,408.24/x
  3. Step 3: Cross multiply
    86,128.24x = 118,850.84 × 48,408.24
  4. Step 4: Simplify right side
    86,128.24x = 5,753,359,986.92
  5. Step 5: Solve for x
    x = 5,753,359,986.92/86,128.24
  6. Step 6: Final answer
    x = 66,799.93

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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.