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Finding the Fourth Proportional to 45,172.80, 67,759.20 and 21,844.80

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Solution

The fourth proportional to 45,172.80, 67,759.20 and 21,844.80 is: 32,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.80 : 67,759.20 = 21,844.80 : x
  2. Step 2: Convert to fraction form
    45,172.80/67,759.20 = 21,844.80/x
  3. Step 3: Cross multiply
    45,172.80x = 67,759.20 × 21,844.80
  4. Step 4: Simplify right side
    45,172.80x = 1,480,186,172.16
  5. Step 5: Solve for x
    x = 1,480,186,172.16/45,172.80
  6. Step 6: Final answer
    x = 32,767.20

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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.