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Finding the Fourth Proportional to 48,192.80, 72,285.60 and 20,105.60

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Solution

The fourth proportional to 48,192.80, 72,285.60 and 20,105.60 is: 30,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,192.80 : 72,285.60 = 20,105.60 : x
  2. Step 2: Convert to fraction form
    48,192.80/72,285.60 = 20,105.60/x
  3. Step 3: Cross multiply
    48,192.80x = 72,285.60 × 20,105.60
  4. Step 4: Simplify right side
    48,192.80x = 1,453,345,359.36
  5. Step 5: Solve for x
    x = 1,453,345,359.36/48,192.80
  6. Step 6: Final answer
    x = 30,156.90

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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.