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Finding the Fourth Proportional to 46,607.80, 69,899.10 and 20,306.20

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Solution

The fourth proportional to 46,607.80, 69,899.10 and 20,306.20 is: 30,453.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,607.80 : 69,899.10 = 20,306.20 : x
  2. Step 2: Convert to fraction form
    46,607.80/69,899.10 = 20,306.20/x
  3. Step 3: Cross multiply
    46,607.80x = 69,899.10 × 20,306.20
  4. Step 4: Simplify right side
    46,607.80x = 1,419,385,104.42
  5. Step 5: Solve for x
    x = 1,419,385,104.42/46,607.80
  6. Step 6: Final answer
    x = 30,453.81

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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.