Home / 51,405.42-77,108.66-18,119.28

Finding the Fourth Proportional to 51,405.42, 77,108.66 and 18,119.28

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Solution

The fourth proportional to 51,405.42, 77,108.66 and 18,119.28 is: 27,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.42 : 77,108.66 = 18,119.28 : x
  2. Step 2: Convert to fraction form
    51,405.42/77,108.66 = 18,119.28/x
  3. Step 3: Cross multiply
    51,405.42x = 77,108.66 × 18,119.28
  4. Step 4: Simplify right side
    51,405.42x = 1,397,153,400.96
  5. Step 5: Solve for x
    x = 1,397,153,400.96/51,405.42
  6. Step 6: Final answer
    x = 27,179.11

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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.