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Finding the Fourth Proportional to 36,662.80, 54,994.20 and 21,110.80

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Solution

The fourth proportional to 36,662.80, 54,994.20 and 21,110.80 is: 31,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,662.80 : 54,994.20 = 21,110.80 : x
  2. Step 2: Convert to fraction form
    36,662.80/54,994.20 = 21,110.80/x
  3. Step 3: Cross multiply
    36,662.80x = 54,994.20 × 21,110.80
  4. Step 4: Simplify right side
    36,662.80x = 1,160,971,557.36
  5. Step 5: Solve for x
    x = 1,160,971,557.36/36,662.80
  6. Step 6: Final answer
    x = 31,666.20

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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.