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Finding the Fourth Proportional to 73,157.40, 109,740.12 and 20,562.72

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Solution

The fourth proportional to 73,157.40, 109,740.12 and 20,562.72 is: 30,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,157.40 : 109,740.12 = 20,562.72 : x
  2. Step 2: Convert to fraction form
    73,157.40/109,740.12 = 20,562.72/x
  3. Step 3: Cross multiply
    73,157.40x = 109,740.12 × 20,562.72
  4. Step 4: Simplify right side
    73,157.40x = 2,256,555,360.33
  5. Step 5: Solve for x
    x = 2,256,555,360.33/73,157.40
  6. Step 6: Final answer
    x = 30,845.21

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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.