Home / 68,945.10-103,417.65-55,121.10

Finding the Fourth Proportional to 68,945.10, 103,417.65 and 55,121.10

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Solution

The fourth proportional to 68,945.10, 103,417.65 and 55,121.10 is: 82,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,945.10 : 103,417.65 = 55,121.10 : x
  2. Step 2: Convert to fraction form
    68,945.10/103,417.65 = 55,121.10/x
  3. Step 3: Cross multiply
    68,945.10x = 103,417.65 × 55,121.10
  4. Step 4: Simplify right side
    68,945.10x = 5,700,494,627.42
  5. Step 5: Solve for x
    x = 5,700,494,627.42/68,945.10
  6. Step 6: Final answer
    x = 82,681.65

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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.