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Finding the Fourth Proportional to 69,304.92, 103,970.21 and 21,931.92

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Solution

The fourth proportional to 69,304.92, 103,970.21 and 21,931.92 is: 32,901.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,304.92 : 103,970.21 = 21,931.92 : x
  2. Step 2: Convert to fraction form
    69,304.92/103,970.21 = 21,931.92/x
  3. Step 3: Cross multiply
    69,304.92x = 103,970.21 × 21,931.92
  4. Step 4: Simplify right side
    69,304.92x = 2,280,266,218.44
  5. Step 5: Solve for x
    x = 2,280,266,218.44/69,304.92
  6. Step 6: Final answer
    x = 32,901.94

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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.