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Finding the Fourth Proportional to 69,099.92, 103,649.85 and 19,180.01

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Solution

The fourth proportional to 69,099.92, 103,649.85 and 19,180.01 is: 28,770.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,099.92 : 103,649.85 = 19,180.01 : x
  2. Step 2: Convert to fraction form
    69,099.92/103,649.85 = 19,180.01/x
  3. Step 3: Cross multiply
    69,099.92x = 103,649.85 × 19,180.01
  4. Step 4: Simplify right side
    69,099.92x = 1,988,004,641.25
  5. Step 5: Solve for x
    x = 1,988,004,641.25/69,099.92
  6. Step 6: Final answer
    x = 28,770.00

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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.