Home / 81,040.82-121,565.55-25,632.50

Finding the Fourth Proportional to 81,040.82, 121,565.55 and 25,632.50

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Solution

The fourth proportional to 81,040.82, 121,565.55 and 25,632.50 is: 38,450.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,040.82 : 121,565.55 = 25,632.50 : x
  2. Step 2: Convert to fraction form
    81,040.82/121,565.55 = 25,632.50/x
  3. Step 3: Cross multiply
    81,040.82x = 121,565.55 × 25,632.50
  4. Step 4: Simplify right side
    81,040.82x = 3,116,028,960.38
  5. Step 5: Solve for x
    x = 3,116,028,960.38/81,040.82
  6. Step 6: Final answer
    x = 38,450.12

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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.