Home / 77,404.46-106,819.30-45,138.18

Finding the Fourth Proportional to 77,404.46, 106,819.30 and 45,138.18

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Solution

The fourth proportional to 77,404.46, 106,819.30 and 45,138.18 is: 62,291.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,404.46 : 106,819.30 = 45,138.18 : x
  2. Step 2: Convert to fraction form
    77,404.46/106,819.30 = 45,138.18/x
  3. Step 3: Cross multiply
    77,404.46x = 106,819.30 × 45,138.18
  4. Step 4: Simplify right side
    77,404.46x = 4,821,628,790.87
  5. Step 5: Solve for x
    x = 4,821,628,790.87/77,404.46
  6. Step 6: Final answer
    x = 62,291.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.