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Finding the Fourth Proportional to 72,639.83, 108,992.09 and 37,082.35

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Solution

The fourth proportional to 72,639.83, 108,992.09 and 37,082.35 is: 55,640.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,639.83 : 108,992.09 = 37,082.35 : x
  2. Step 2: Convert to fraction form
    72,639.83/108,992.09 = 37,082.35/x
  3. Step 3: Cross multiply
    72,639.83x = 108,992.09 × 37,082.35
  4. Step 4: Simplify right side
    72,639.83x = 4,041,682,648.84
  5. Step 5: Solve for x
    x = 4,041,682,648.84/72,639.83
  6. Step 6: Final answer
    x = 55,640.03

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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.