Home / 86,745.18-130,129.38-30,572.04

Finding the Fourth Proportional to 86,745.18, 130,129.38 and 30,572.04

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Solution

The fourth proportional to 86,745.18, 130,129.38 and 30,572.04 is: 45,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,745.18 : 130,129.38 = 30,572.04 : x
  2. Step 2: Convert to fraction form
    86,745.18/130,129.38 = 30,572.04/x
  3. Step 3: Cross multiply
    86,745.18x = 130,129.38 × 30,572.04
  4. Step 4: Simplify right side
    86,745.18x = 3,978,320,610.54
  5. Step 5: Solve for x
    x = 3,978,320,610.54/86,745.18
  6. Step 6: Final answer
    x = 45,862.15

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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.