Home / 51,415.45-77,134.71-18,135.79

Finding the Fourth Proportional to 51,415.45, 77,134.71 and 18,135.79

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Solution

The fourth proportional to 51,415.45, 77,134.71 and 18,135.79 is: 27,207.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,415.45 : 77,134.71 = 18,135.79 : x
  2. Step 2: Convert to fraction form
    51,415.45/77,134.71 = 18,135.79/x
  3. Step 3: Cross multiply
    51,415.45x = 77,134.71 × 18,135.79
  4. Step 4: Simplify right side
    51,415.45x = 1,398,898,902.27
  5. Step 5: Solve for x
    x = 1,398,898,902.27/51,415.45
  6. Step 6: Final answer
    x = 27,207.75

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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.