Home / 51,174.87-76,762.31-19,988.25

Finding the Fourth Proportional to 51,174.87, 76,762.31 and 19,988.25

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Solution

The fourth proportional to 51,174.87, 76,762.31 and 19,988.25 is: 29,982.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,174.87 : 76,762.31 = 19,988.25 : x
  2. Step 2: Convert to fraction form
    51,174.87/76,762.31 = 19,988.25/x
  3. Step 3: Cross multiply
    51,174.87x = 76,762.31 × 19,988.25
  4. Step 4: Simplify right side
    51,174.87x = 1,534,344,142.92
  5. Step 5: Solve for x
    x = 1,534,344,142.92/51,174.87
  6. Step 6: Final answer
    x = 29,982.38

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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.