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Finding the Fourth Proportional to 69,021.20, 103,531.80 and 24,649.40

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Solution

The fourth proportional to 69,021.20, 103,531.80 and 24,649.40 is: 36,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,021.20 : 103,531.80 = 24,649.40 : x
  2. Step 2: Convert to fraction form
    69,021.20/103,531.80 = 24,649.40/x
  3. Step 3: Cross multiply
    69,021.20x = 103,531.80 × 24,649.40
  4. Step 4: Simplify right side
    69,021.20x = 2,551,996,750.92
  5. Step 5: Solve for x
    x = 2,551,996,750.92/69,021.20
  6. Step 6: Final answer
    x = 36,974.10

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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.