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Finding the Fourth Proportional to 73,173.92, 109,748.06 and 20,570.90

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Solution

The fourth proportional to 73,173.92, 109,748.06 and 20,570.90 is: 30,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,173.92 : 109,748.06 = 20,570.90 : x
  2. Step 2: Convert to fraction form
    73,173.92/109,748.06 = 20,570.90/x
  3. Step 3: Cross multiply
    73,173.92x = 109,748.06 × 20,570.90
  4. Step 4: Simplify right side
    73,173.92x = 2,257,616,367.45
  5. Step 5: Solve for x
    x = 2,257,616,367.45/73,173.92
  6. Step 6: Final answer
    x = 30,852.75

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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.