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Finding the Fourth Proportional to 34,777.44, 47,985.48 and 20,634.88

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Solution

The fourth proportional to 34,777.44, 47,985.48 and 20,634.88 is: 28,471.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,777.44 : 47,985.48 = 20,634.88 : x
  2. Step 2: Convert to fraction form
    34,777.44/47,985.48 = 20,634.88/x
  3. Step 3: Cross multiply
    34,777.44x = 47,985.48 × 20,634.88
  4. Step 4: Simplify right side
    34,777.44x = 990,174,621.54
  5. Step 5: Solve for x
    x = 990,174,621.54/34,777.44
  6. Step 6: Final answer
    x = 28,471.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.