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Finding the Fourth Proportional to 55,463.80, 83,203.89 and 20,400.88

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Solution

The fourth proportional to 55,463.80, 83,203.89 and 20,400.88 is: 30,604.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,463.80 : 83,203.89 = 20,400.88 : x
  2. Step 2: Convert to fraction form
    55,463.80/83,203.89 = 20,400.88/x
  3. Step 3: Cross multiply
    55,463.80x = 83,203.89 × 20,400.88
  4. Step 4: Simplify right side
    55,463.80x = 1,697,432,575.42
  5. Step 5: Solve for x
    x = 1,697,432,575.42/55,463.80
  6. Step 6: Final answer
    x = 30,604.33

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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.