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Finding the Fourth Proportional to 53,793.60, 80,776.80 and 39,105.60

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Solution

The fourth proportional to 53,793.60, 80,776.80 and 39,105.60 is: 58,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,793.60 : 80,776.80 = 39,105.60 : x
  2. Step 2: Convert to fraction form
    53,793.60/80,776.80 = 39,105.60/x
  3. Step 3: Cross multiply
    53,793.60x = 80,776.80 × 39,105.60
  4. Step 4: Simplify right side
    53,793.60x = 3,158,825,230.08
  5. Step 5: Solve for x
    x = 3,158,825,230.08/53,793.60
  6. Step 6: Final answer
    x = 58,721.21

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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.