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Finding the Fourth Proportional to 69,147.66, 103,727.91 and 53,582.70

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Solution

The fourth proportional to 69,147.66, 103,727.91 and 53,582.70 is: 80,379.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,147.66 : 103,727.91 = 53,582.70 : x
  2. Step 2: Convert to fraction form
    69,147.66/103,727.91 = 53,582.70/x
  3. Step 3: Cross multiply
    69,147.66x = 103,727.91 × 53,582.70
  4. Step 4: Simplify right side
    69,147.66x = 5,558,021,483.16
  5. Step 5: Solve for x
    x = 5,558,021,483.16/69,147.66
  6. Step 6: Final answer
    x = 80,379.02

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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.