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Finding the Fourth Proportional to 48,151, 72,240.90 and 20,451.16

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Solution

The fourth proportional to 48,151, 72,240.90 and 20,451.16 is: 30,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,151 : 72,240.90 = 20,451.16 : x
  2. Step 2: Convert to fraction form
    48,151/72,240.90 = 20,451.16/x
  3. Step 3: Cross multiply
    48,151x = 72,240.90 × 20,451.16
  4. Step 4: Simplify right side
    48,151x = 1,477,410,204.44
  5. Step 5: Solve for x
    x = 1,477,410,204.44/48,151
  6. Step 6: Final answer
    x = 30,682.86

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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.