Home / 51,380.21-76,876.52-30,331.71

Finding the Fourth Proportional to 51,380.21, 76,876.52 and 30,331.71

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Solution

The fourth proportional to 51,380.21, 76,876.52 and 30,331.71 is: 45,383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,380.21 : 76,876.52 = 30,331.71 : x
  2. Step 2: Convert to fraction form
    51,380.21/76,876.52 = 30,331.71/x
  3. Step 3: Cross multiply
    51,380.21x = 76,876.52 × 30,331.71
  4. Step 4: Simplify right side
    51,380.21x = 2,331,796,386.28
  5. Step 5: Solve for x
    x = 2,331,796,386.28/51,380.21
  6. Step 6: Final answer
    x = 45,383.16

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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.