Home / 86,745.51-130,119.17-30,575.15

Finding the Fourth Proportional to 86,745.51, 130,119.17 and 30,575.15

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Solution

The fourth proportional to 86,745.51, 130,119.17 and 30,575.15 is: 45,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,745.51 : 130,119.17 = 30,575.15 : x
  2. Step 2: Convert to fraction form
    86,745.51/130,119.17 = 30,575.15/x
  3. Step 3: Cross multiply
    86,745.51x = 130,119.17 × 30,575.15
  4. Step 4: Simplify right side
    86,745.51x = 3,978,413,313.05
  5. Step 5: Solve for x
    x = 3,978,413,313.05/86,745.51
  6. Step 6: Final answer
    x = 45,863.05

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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.