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Finding the Fourth Proportional to 69,003.80, 103,505.70 and 48,008.60

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Solution

The fourth proportional to 69,003.80, 103,505.70 and 48,008.60 is: 72,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,003.80 : 103,505.70 = 48,008.60 : x
  2. Step 2: Convert to fraction form
    69,003.80/103,505.70 = 48,008.60/x
  3. Step 3: Cross multiply
    69,003.80x = 103,505.70 × 48,008.60
  4. Step 4: Simplify right side
    69,003.80x = 4,969,163,749.02
  5. Step 5: Solve for x
    x = 4,969,163,749.02/69,003.80
  6. Step 6: Final answer
    x = 72,012.90

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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.