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Finding the Fourth Proportional to 45,777.44, 68,701.29 and 20,484.78

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Solution

The fourth proportional to 45,777.44, 68,701.29 and 20,484.78 is: 30,742.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,777.44 : 68,701.29 = 20,484.78 : x
  2. Step 2: Convert to fraction form
    45,777.44/68,701.29 = 20,484.78/x
  3. Step 3: Cross multiply
    45,777.44x = 68,701.29 × 20,484.78
  4. Step 4: Simplify right side
    45,777.44x = 1,407,330,811.37
  5. Step 5: Solve for x
    x = 1,407,330,811.37/45,777.44
  6. Step 6: Final answer
    x = 30,742.89

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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.