Home / 80,792.31-121,196.78-30,914.36

Finding the Fourth Proportional to 80,792.31, 121,196.78 and 30,914.36

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Solution

The fourth proportional to 80,792.31, 121,196.78 and 30,914.36 is: 46,374.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,792.31 : 121,196.78 = 30,914.36 : x
  2. Step 2: Convert to fraction form
    80,792.31/121,196.78 = 30,914.36/x
  3. Step 3: Cross multiply
    80,792.31x = 121,196.78 × 30,914.36
  4. Step 4: Simplify right side
    80,792.31x = 3,746,720,127.21
  5. Step 5: Solve for x
    x = 3,746,720,127.21/80,792.31
  6. Step 6: Final answer
    x = 46,374.71

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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.