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Finding the Fourth Proportional to 69,336.80, 104,005.20 and 60,783.20

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Solution

The fourth proportional to 69,336.80, 104,005.20 and 60,783.20 is: 91,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,336.80 : 104,005.20 = 60,783.20 : x
  2. Step 2: Convert to fraction form
    69,336.80/104,005.20 = 60,783.20/x
  3. Step 3: Cross multiply
    69,336.80x = 104,005.20 × 60,783.20
  4. Step 4: Simplify right side
    69,336.80x = 6,321,768,872.64
  5. Step 5: Solve for x
    x = 6,321,768,872.64/69,336.80
  6. Step 6: Final answer
    x = 91,174.80

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1.5x scale

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.