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Finding the Fourth Proportional to 69,225.40, 103,838.10 and 68,569.30

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Solution

The fourth proportional to 69,225.40, 103,838.10 and 68,569.30 is: 102,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,225.40 : 103,838.10 = 68,569.30 : x
  2. Step 2: Convert to fraction form
    69,225.40/103,838.10 = 68,569.30/x
  3. Step 3: Cross multiply
    69,225.40x = 103,838.10 × 68,569.30
  4. Step 4: Simplify right side
    69,225.40x = 7,120,105,830.33
  5. Step 5: Solve for x
    x = 7,120,105,830.33/69,225.40
  6. Step 6: Final answer
    x = 102,853.95

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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.