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Finding the Fourth Proportional to 72,272.88, 108,409.44 and 47,469.60

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Solution

The fourth proportional to 72,272.88, 108,409.44 and 47,469.60 is: 71,204.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,272.88 : 108,409.44 = 47,469.60 : x
  2. Step 2: Convert to fraction form
    72,272.88/108,409.44 = 47,469.60/x
  3. Step 3: Cross multiply
    72,272.88x = 108,409.44 × 47,469.60
  4. Step 4: Simplify right side
    72,272.88x = 5,146,152,753.02
  5. Step 5: Solve for x
    x = 5,146,152,753.02/72,272.88
  6. Step 6: Final answer
    x = 71,204.48

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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.