Home / 86,235.85-129,321.51-30,061.54

Finding the Fourth Proportional to 86,235.85, 129,321.51 and 30,061.54

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Solution

The fourth proportional to 86,235.85, 129,321.51 and 30,061.54 is: 45,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,235.85 : 129,321.51 = 30,061.54 : x
  2. Step 2: Convert to fraction form
    86,235.85/129,321.51 = 30,061.54/x
  3. Step 3: Cross multiply
    86,235.85x = 129,321.51 × 30,061.54
  4. Step 4: Simplify right side
    86,235.85x = 3,887,603,745.73
  5. Step 5: Solve for x
    x = 3,887,603,745.73/86,235.85
  6. Step 6: Final answer
    x = 45,081.06

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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.