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Finding the Fourth Proportional to 69,099.54, 103,649.35 and 19,179.68

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Solution

The fourth proportional to 69,099.54, 103,649.35 and 19,179.68 is: 28,769.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,099.54 : 103,649.35 = 19,179.68 : x
  2. Step 2: Convert to fraction form
    69,099.54/103,649.35 = 19,179.68/x
  3. Step 3: Cross multiply
    69,099.54x = 103,649.35 × 19,179.68
  4. Step 4: Simplify right side
    69,099.54x = 1,987,961,430.79
  5. Step 5: Solve for x
    x = 1,987,961,430.79/69,099.54
  6. Step 6: Final answer
    x = 28,769.53

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1.5x scale

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.