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Finding the Fourth Proportional to 73,223.10, 109,834.65 and 65,619.90

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Solution

The fourth proportional to 73,223.10, 109,834.65 and 65,619.90 is: 98,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,223.10 : 109,834.65 = 65,619.90 : x
  2. Step 2: Convert to fraction form
    73,223.10/109,834.65 = 65,619.90/x
  3. Step 3: Cross multiply
    73,223.10x = 109,834.65 × 65,619.90
  4. Step 4: Simplify right side
    73,223.10x = 7,207,338,749.54
  5. Step 5: Solve for x
    x = 7,207,338,749.54/73,223.10
  6. Step 6: Final answer
    x = 98,429.85

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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.