Home / 68,629.90-102,948.53-21,277.71

Finding the Fourth Proportional to 68,629.90, 102,948.53 and 21,277.71

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Solution

The fourth proportional to 68,629.90, 102,948.53 and 21,277.71 is: 31,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,629.90 : 102,948.53 = 21,277.71 : x
  2. Step 2: Convert to fraction form
    68,629.90/102,948.53 = 21,277.71/x
  3. Step 3: Cross multiply
    68,629.90x = 102,948.53 × 21,277.71
  4. Step 4: Simplify right side
    68,629.90x = 2,190,508,966.27
  5. Step 5: Solve for x
    x = 2,190,508,966.27/68,629.90
  6. Step 6: Final answer
    x = 31,917.71

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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.