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Finding the Fourth Proportional to 69,812.42, 104,762.37 and 28,259.42

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Solution

The fourth proportional to 69,812.42, 104,762.37 and 28,259.42 is: 42,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,812.42 : 104,762.37 = 28,259.42 : x
  2. Step 2: Convert to fraction form
    69,812.42/104,762.37 = 28,259.42/x
  3. Step 3: Cross multiply
    69,812.42x = 104,762.37 × 28,259.42
  4. Step 4: Simplify right side
    69,812.42x = 2,960,523,290.21
  5. Step 5: Solve for x
    x = 2,960,523,290.21/69,812.42
  6. Step 6: Final answer
    x = 42,406.83

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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.