Home / 31,805.80-47,708.70-27,428.20

Finding the Fourth Proportional to 31,805.80, 47,708.70 and 27,428.20

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Solution

The fourth proportional to 31,805.80, 47,708.70 and 27,428.20 is: 41,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,805.80 : 47,708.70 = 27,428.20 : x
  2. Step 2: Convert to fraction form
    31,805.80/47,708.70 = 27,428.20/x
  3. Step 3: Cross multiply
    31,805.80x = 47,708.70 × 27,428.20
  4. Step 4: Simplify right side
    31,805.80x = 1,308,563,765.34
  5. Step 5: Solve for x
    x = 1,308,563,765.34/31,805.80
  6. Step 6: Final answer
    x = 41,142.30

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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.