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Finding the Fourth Proportional to 72,039.35, 108,050.52 and 19,452.94

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Solution

The fourth proportional to 72,039.35, 108,050.52 and 19,452.94 is: 29,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,039.35 : 108,050.52 = 19,452.94 : x
  2. Step 2: Convert to fraction form
    72,039.35/108,050.52 = 19,452.94/x
  3. Step 3: Cross multiply
    72,039.35x = 108,050.52 × 19,452.94
  4. Step 4: Simplify right side
    72,039.35x = 2,101,899,742.28
  5. Step 5: Solve for x
    x = 2,101,899,742.28/72,039.35
  6. Step 6: Final answer
    x = 29,177.11

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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.