Home / 68,990.97-103,488.75-53,984.25

Finding the Fourth Proportional to 68,990.97, 103,488.75 and 53,984.25

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Solution

The fourth proportional to 68,990.97, 103,488.75 and 53,984.25 is: 80,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.97 : 103,488.75 = 53,984.25 : x
  2. Step 2: Convert to fraction form
    68,990.97/103,488.75 = 53,984.25/x
  3. Step 3: Cross multiply
    68,990.97x = 103,488.75 × 53,984.25
  4. Step 4: Simplify right side
    68,990.97x = 5,586,762,552.19
  5. Step 5: Solve for x
    x = 5,586,762,552.19/68,990.97
  6. Step 6: Final answer
    x = 80,978.17

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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.