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Finding the Fourth Proportional to 73,130.80, 109,687.56 and 19,091.92

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Solution

The fourth proportional to 73,130.80, 109,687.56 and 19,091.92 is: 28,635.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,130.80 : 109,687.56 = 19,091.92 : x
  2. Step 2: Convert to fraction form
    73,130.80/109,687.56 = 19,091.92/x
  3. Step 3: Cross multiply
    73,130.80x = 109,687.56 × 19,091.92
  4. Step 4: Simplify right side
    73,130.80x = 2,094,146,120.52
  5. Step 5: Solve for x
    x = 2,094,146,120.52/73,130.80
  6. Step 6: Final answer
    x = 28,635.62

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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.