Home / 81,291.92-121,949.51-25,136.38

Finding the Fourth Proportional to 81,291.92, 121,949.51 and 25,136.38

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Solution

The fourth proportional to 81,291.92, 121,949.51 and 25,136.38 is: 37,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,291.92 : 121,949.51 = 25,136.38 : x
  2. Step 2: Convert to fraction form
    81,291.92/121,949.51 = 25,136.38/x
  3. Step 3: Cross multiply
    81,291.92x = 121,949.51 × 25,136.38
  4. Step 4: Simplify right side
    81,291.92x = 3,065,369,224.17
  5. Step 5: Solve for x
    x = 3,065,369,224.17/81,291.92
  6. Step 6: Final answer
    x = 37,708.17

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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.