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Finding the Fourth Proportional to 73,147.25, 109,748.21 and 28,804.91

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Solution

The fourth proportional to 73,147.25, 109,748.21 and 28,804.91 is: 43,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,147.25 : 109,748.21 = 28,804.91 : x
  2. Step 2: Convert to fraction form
    73,147.25/109,748.21 = 28,804.91/x
  3. Step 3: Cross multiply
    73,147.25x = 109,748.21 × 28,804.91
  4. Step 4: Simplify right side
    73,147.25x = 3,161,287,311.71
  5. Step 5: Solve for x
    x = 3,161,287,311.71/73,147.25
  6. Step 6: Final answer
    x = 43,218.13

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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.