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Finding the Fourth Proportional to 69,277.55, 103,915.69 and 21,892.65

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Solution

The fourth proportional to 69,277.55, 103,915.69 and 21,892.65 is: 32,838.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,277.55 : 103,915.69 = 21,892.65 : x
  2. Step 2: Convert to fraction form
    69,277.55/103,915.69 = 21,892.65/x
  3. Step 3: Cross multiply
    69,277.55x = 103,915.69 × 21,892.65
  4. Step 4: Simplify right side
    69,277.55x = 2,274,989,311.10
  5. Step 5: Solve for x
    x = 2,274,989,311.10/69,277.55
  6. Step 6: Final answer
    x = 32,838.77

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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.