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Finding the Fourth Proportional to 86,712.30, 130,080.84 and 26,745.81

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Solution

The fourth proportional to 86,712.30, 130,080.84 and 26,745.81 is: 40,122.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.30 : 130,080.84 = 26,745.81 : x
  2. Step 2: Convert to fraction form
    86,712.30/130,080.84 = 26,745.81/x
  3. Step 3: Cross multiply
    86,712.30x = 130,080.84 × 26,745.81
  4. Step 4: Simplify right side
    86,712.30x = 3,479,117,431.28
  5. Step 5: Solve for x
    x = 3,479,117,431.28/86,712.30
  6. Step 6: Final answer
    x = 40,122.54

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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.