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Finding the Fourth Proportional to 45,101.56, 67,652.80 and 20,142.88

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Solution

The fourth proportional to 45,101.56, 67,652.80 and 20,142.88 is: 30,214.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,101.56 : 67,652.80 = 20,142.88 : x
  2. Step 2: Convert to fraction form
    45,101.56/67,652.80 = 20,142.88/x
  3. Step 3: Cross multiply
    45,101.56x = 67,652.80 × 20,142.88
  4. Step 4: Simplify right side
    45,101.56x = 1,362,722,232.06
  5. Step 5: Solve for x
    x = 1,362,722,232.06/45,101.56
  6. Step 6: Final answer
    x = 30,214.53

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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.