Home / 86,745.40-130,167.32-39,998.28

Finding the Fourth Proportional to 86,745.40, 130,167.32 and 39,998.28

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Solution

The fourth proportional to 86,745.40, 130,167.32 and 39,998.28 is: 60,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,745.40 : 130,167.32 = 39,998.28 : x
  2. Step 2: Convert to fraction form
    86,745.40/130,167.32 = 39,998.28/x
  3. Step 3: Cross multiply
    86,745.40x = 130,167.32 × 39,998.28
  4. Step 4: Simplify right side
    86,745.40x = 5,206,468,912.21
  5. Step 5: Solve for x
    x = 5,206,468,912.21/86,745.40
  6. Step 6: Final answer
    x = 60,020.12

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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.