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Finding the Fourth Proportional to 69,176.80, 103,813.80 and 29,762.20

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Solution

The fourth proportional to 69,176.80, 103,813.80 and 29,762.20 is: 44,664.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,176.80 : 103,813.80 = 29,762.20 : x
  2. Step 2: Convert to fraction form
    69,176.80/103,813.80 = 29,762.20/x
  3. Step 3: Cross multiply
    69,176.80x = 103,813.80 × 29,762.20
  4. Step 4: Simplify right side
    69,176.80x = 3,089,727,078.36
  5. Step 5: Solve for x
    x = 3,089,727,078.36/69,176.80
  6. Step 6: Final answer
    x = 44,664.21

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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.