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Finding the Fourth Proportional to 73,879.68, 110,830.45 and 27,128.91

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Solution

The fourth proportional to 73,879.68, 110,830.45 and 27,128.91 is: 40,697.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,879.68 : 110,830.45 = 27,128.91 : x
  2. Step 2: Convert to fraction form
    73,879.68/110,830.45 = 27,128.91/x
  3. Step 3: Cross multiply
    73,879.68x = 110,830.45 × 27,128.91
  4. Step 4: Simplify right side
    73,879.68x = 3,006,709,235.49
  5. Step 5: Solve for x
    x = 3,006,709,235.49/73,879.68
  6. Step 6: Final answer
    x = 40,697.38

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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.