Home / 76,508.20-114,761.70-45,321

Finding the Fourth Proportional to 76,508.20, 114,761.70 and 45,321

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Solution

The fourth proportional to 76,508.20, 114,761.70 and 45,321 is: 67,981.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,508.20 : 114,761.70 = 45,321 : x
  2. Step 2: Convert to fraction form
    76,508.20/114,761.70 = 45,321/x
  3. Step 3: Cross multiply
    76,508.20x = 114,761.70 × 45,321
  4. Step 4: Simplify right side
    76,508.20x = 5,201,115,005.70
  5. Step 5: Solve for x
    x = 5,201,115,005.70/76,508.20
  6. Step 6: Final answer
    x = 67,981.14

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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.