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Finding the Fourth Proportional to 72,124.38, 108,185.40 and 27,760.77

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Solution

The fourth proportional to 72,124.38, 108,185.40 and 27,760.77 is: 41,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,124.38 : 108,185.40 = 27,760.77 : x
  2. Step 2: Convert to fraction form
    72,124.38/108,185.40 = 27,760.77/x
  3. Step 3: Cross multiply
    72,124.38x = 108,185.40 × 27,760.77
  4. Step 4: Simplify right side
    72,124.38x = 3,003,310,006.76
  5. Step 5: Solve for x
    x = 3,003,310,006.76/72,124.38
  6. Step 6: Final answer
    x = 41,640.70

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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.