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Finding the Fourth Proportional to 86,610.48, 129,974.04 and 39,238.44

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Solution

The fourth proportional to 86,610.48, 129,974.04 and 39,238.44 is: 58,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,610.48 : 129,974.04 = 39,238.44 : x
  2. Step 2: Convert to fraction form
    86,610.48/129,974.04 = 39,238.44/x
  3. Step 3: Cross multiply
    86,610.48x = 129,974.04 × 39,238.44
  4. Step 4: Simplify right side
    86,610.48x = 5,099,978,570.10
  5. Step 5: Solve for x
    x = 5,099,978,570.10/86,610.48
  6. Step 6: Final answer
    x = 58,884.08

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1.5x scale

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.