Home / 89,116.74-122,964.21-55,129.14

Finding the Fourth Proportional to 89,116.74, 122,964.21 and 55,129.14

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Solution

The fourth proportional to 89,116.74, 122,964.21 and 55,129.14 is: 76,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,116.74 : 122,964.21 = 55,129.14 : x
  2. Step 2: Convert to fraction form
    89,116.74/122,964.21 = 55,129.14/x
  3. Step 3: Cross multiply
    89,116.74x = 122,964.21 × 55,129.14
  4. Step 4: Simplify right side
    89,116.74x = 6,778,911,148.08
  5. Step 5: Solve for x
    x = 6,778,911,148.08/89,116.74
  6. Step 6: Final answer
    x = 76,067.76

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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.