Home / 81,109.78-121,664.96-24,949.51

Finding the Fourth Proportional to 81,109.78, 121,664.96 and 24,949.51

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Solution

The fourth proportional to 81,109.78, 121,664.96 and 24,949.51 is: 37,424.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,109.78 : 121,664.96 = 24,949.51 : x
  2. Step 2: Convert to fraction form
    81,109.78/121,664.96 = 24,949.51/x
  3. Step 3: Cross multiply
    81,109.78x = 121,664.96 × 24,949.51
  4. Step 4: Simplify right side
    81,109.78x = 3,035,481,136.17
  5. Step 5: Solve for x
    x = 3,035,481,136.17/81,109.78
  6. Step 6: Final answer
    x = 37,424.35

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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.