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Finding the Fourth Proportional to 69,833.40, 104,750.10 and 68,681.40

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Solution

The fourth proportional to 69,833.40, 104,750.10 and 68,681.40 is: 103,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,833.40 : 104,750.10 = 68,681.40 : x
  2. Step 2: Convert to fraction form
    69,833.40/104,750.10 = 68,681.40/x
  3. Step 3: Cross multiply
    69,833.40x = 104,750.10 × 68,681.40
  4. Step 4: Simplify right side
    69,833.40x = 7,194,383,518.14
  5. Step 5: Solve for x
    x = 7,194,383,518.14/69,833.40
  6. Step 6: Final answer
    x = 103,022.10

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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.