Home / 81,060.70-121,603.28-38,932.85

Finding the Fourth Proportional to 81,060.70, 121,603.28 and 38,932.85

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Solution

The fourth proportional to 81,060.70, 121,603.28 and 38,932.85 is: 58,405.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,060.70 : 121,603.28 = 38,932.85 : x
  2. Step 2: Convert to fraction form
    81,060.70/121,603.28 = 38,932.85/x
  3. Step 3: Cross multiply
    81,060.70x = 121,603.28 × 38,932.85
  4. Step 4: Simplify right side
    81,060.70x = 4,734,362,369.09
  5. Step 5: Solve for x
    x = 4,734,362,369.09/81,060.70
  6. Step 6: Final answer
    x = 58,405.15

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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.