Home / 51,115.70-76,682.20-28,972.46

Finding the Fourth Proportional to 51,115.70, 76,682.20 and 28,972.46

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Solution

The fourth proportional to 51,115.70, 76,682.20 and 28,972.46 is: 43,463.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,115.70 : 76,682.20 = 28,972.46 : x
  2. Step 2: Convert to fraction form
    51,115.70/76,682.20 = 28,972.46/x
  3. Step 3: Cross multiply
    51,115.70x = 76,682.20 × 28,972.46
  4. Step 4: Simplify right side
    51,115.70x = 2,221,671,972.21
  5. Step 5: Solve for x
    x = 2,221,671,972.21/51,115.70
  6. Step 6: Final answer
    x = 43,463.59

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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.