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Finding the Fourth Proportional to 45,310.54, 67,988.08 and 20,368.22

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Solution

The fourth proportional to 45,310.54, 67,988.08 and 20,368.22 is: 30,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,310.54 : 67,988.08 = 20,368.22 : x
  2. Step 2: Convert to fraction form
    45,310.54/67,988.08 = 20,368.22/x
  3. Step 3: Cross multiply
    45,310.54x = 67,988.08 × 20,368.22
  4. Step 4: Simplify right side
    45,310.54x = 1,384,796,170.82
  5. Step 5: Solve for x
    x = 1,384,796,170.82/45,310.54
  6. Step 6: Final answer
    x = 30,562.34

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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.