Home / 86,862.42-130,511.43-55,286.10

Finding the Fourth Proportional to 86,862.42, 130,511.43 and 55,286.10

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Solution

The fourth proportional to 86,862.42, 130,511.43 and 55,286.10 is: 83,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,862.42 : 130,511.43 = 55,286.10 : x
  2. Step 2: Convert to fraction form
    86,862.42/130,511.43 = 55,286.10/x
  3. Step 3: Cross multiply
    86,862.42x = 130,511.43 × 55,286.10
  4. Step 4: Simplify right side
    86,862.42x = 7,215,467,970.12
  5. Step 5: Solve for x
    x = 7,215,467,970.12/86,862.42
  6. Step 6: Final answer
    x = 83,067.78

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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.