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Finding the Fourth Proportional to 53,998.40, 80,997.60 and 40,174.40

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Solution

The fourth proportional to 53,998.40, 80,997.60 and 40,174.40 is: 60,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,998.40 : 80,997.60 = 40,174.40 : x
  2. Step 2: Convert to fraction form
    53,998.40/80,997.60 = 40,174.40/x
  3. Step 3: Cross multiply
    53,998.40x = 80,997.60 × 40,174.40
  4. Step 4: Simplify right side
    53,998.40x = 3,254,029,981.44
  5. Step 5: Solve for x
    x = 3,254,029,981.44/53,998.40
  6. Step 6: Final answer
    x = 60,261.60

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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.