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Finding the Fourth Proportional to 73,005.01, 109,490.77 and 20,418.21

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Solution

The fourth proportional to 73,005.01, 109,490.77 and 20,418.21 is: 30,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,005.01 : 109,490.77 = 20,418.21 : x
  2. Step 2: Convert to fraction form
    73,005.01/109,490.77 = 20,418.21/x
  3. Step 3: Cross multiply
    73,005.01x = 109,490.77 × 20,418.21
  4. Step 4: Simplify right side
    73,005.01x = 2,235,605,534.92
  5. Step 5: Solve for x
    x = 2,235,605,534.92/73,005.01
  6. Step 6: Final answer
    x = 30,622.63

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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.