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Finding the Fourth Proportional to 45,505.80, 68,213.34 and 21,769.56

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Solution

The fourth proportional to 45,505.80, 68,213.34 and 21,769.56 is: 32,632.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,505.80 : 68,213.34 = 21,769.56 : x
  2. Step 2: Convert to fraction form
    45,505.80/68,213.34 = 21,769.56/x
  3. Step 3: Cross multiply
    45,505.80x = 68,213.34 × 21,769.56
  4. Step 4: Simplify right side
    45,505.80x = 1,484,974,397.93
  5. Step 5: Solve for x
    x = 1,484,974,397.93/45,505.80
  6. Step 6: Final answer
    x = 32,632.64

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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.