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Finding the Fourth Proportional to 69,263.49, 103,901.13 and 21,865.90

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Solution

The fourth proportional to 69,263.49, 103,901.13 and 21,865.90 is: 32,800.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,263.49 : 103,901.13 = 21,865.90 : x
  2. Step 2: Convert to fraction form
    69,263.49/103,901.13 = 21,865.90/x
  3. Step 3: Cross multiply
    69,263.49x = 103,901.13 × 21,865.90
  4. Step 4: Simplify right side
    69,263.49x = 2,271,891,718.47
  5. Step 5: Solve for x
    x = 2,271,891,718.47/69,263.49
  6. Step 6: Final answer
    x = 32,800.71

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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.