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Finding the Fourth Proportional to 34,555, 51,830.45 and 20,331.47

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Solution

The fourth proportional to 34,555, 51,830.45 and 20,331.47 is: 30,496.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,555 : 51,830.45 = 20,331.47 : x
  2. Step 2: Convert to fraction form
    34,555/51,830.45 = 20,331.47/x
  3. Step 3: Cross multiply
    34,555x = 51,830.45 × 20,331.47
  4. Step 4: Simplify right side
    34,555x = 1,053,789,239.26
  5. Step 5: Solve for x
    x = 1,053,789,239.26/34,555
  6. Step 6: Final answer
    x = 30,496.00

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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.