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Finding the Fourth Proportional to 71,945.40, 108,047.70 and 69,612.60

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Solution

The fourth proportional to 71,945.40, 108,047.70 and 69,612.60 is: 104,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,945.40 : 108,047.70 = 69,612.60 : x
  2. Step 2: Convert to fraction form
    71,945.40/108,047.70 = 69,612.60/x
  3. Step 3: Cross multiply
    71,945.40x = 108,047.70 × 69,612.60
  4. Step 4: Simplify right side
    71,945.40x = 7,521,481,321.02
  5. Step 5: Solve for x
    x = 7,521,481,321.02/71,945.40
  6. Step 6: Final answer
    x = 104,544.30

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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.