Home / 51,405.90-77,100.21-18,118.14

Finding the Fourth Proportional to 51,405.90, 77,100.21 and 18,118.14

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Solution

The fourth proportional to 51,405.90, 77,100.21 and 18,118.14 is: 27,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.90 : 77,100.21 = 18,118.14 : x
  2. Step 2: Convert to fraction form
    51,405.90/77,100.21 = 18,118.14/x
  3. Step 3: Cross multiply
    51,405.90x = 77,100.21 × 18,118.14
  4. Step 4: Simplify right side
    51,405.90x = 1,396,912,398.81
  5. Step 5: Solve for x
    x = 1,396,912,398.81/51,405.90
  6. Step 6: Final answer
    x = 27,174.16

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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.