Home / 51,218.72-76,836.28-21,636.81

Finding the Fourth Proportional to 51,218.72, 76,836.28 and 21,636.81

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Solution

The fourth proportional to 51,218.72, 76,836.28 and 21,636.81 is: 32,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,218.72 : 76,836.28 = 21,636.81 : x
  2. Step 2: Convert to fraction form
    51,218.72/76,836.28 = 21,636.81/x
  3. Step 3: Cross multiply
    51,218.72x = 76,836.28 × 21,636.81
  4. Step 4: Simplify right side
    51,218.72x = 1,662,491,991.47
  5. Step 5: Solve for x
    x = 1,662,491,991.47/51,218.72
  6. Step 6: Final answer
    x = 32,458.68

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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.