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Finding the Fourth Proportional to 69,005.60, 103,507.60 and 48,658.56

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Solution

The fourth proportional to 69,005.60, 103,507.60 and 48,658.56 is: 72,987.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,005.60 : 103,507.60 = 48,658.56 : x
  2. Step 2: Convert to fraction form
    69,005.60/103,507.60 = 48,658.56/x
  3. Step 3: Cross multiply
    69,005.60x = 103,507.60 × 48,658.56
  4. Step 4: Simplify right side
    69,005.60x = 5,036,530,765.06
  5. Step 5: Solve for x
    x = 5,036,530,765.06/69,005.60
  6. Step 6: Final answer
    x = 72,987.28

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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.