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Finding the Fourth Proportional to 45,592.80, 68,389.20 and 20,623.20

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Solution

The fourth proportional to 45,592.80, 68,389.20 and 20,623.20 is: 30,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,592.80 : 68,389.20 = 20,623.20 : x
  2. Step 2: Convert to fraction form
    45,592.80/68,389.20 = 20,623.20/x
  3. Step 3: Cross multiply
    45,592.80x = 68,389.20 × 20,623.20
  4. Step 4: Simplify right side
    45,592.80x = 1,410,404,149.44
  5. Step 5: Solve for x
    x = 1,410,404,149.44/45,592.80
  6. Step 6: Final answer
    x = 30,934.80

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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.