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Finding the Fourth Proportional to 89,873.76, 124,025.78 and 50,129.76

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Solution

The fourth proportional to 89,873.76, 124,025.78 and 50,129.76 is: 69,179.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,873.76 : 124,025.78 = 50,129.76 : x
  2. Step 2: Convert to fraction form
    89,873.76/124,025.78 = 50,129.76/x
  3. Step 3: Cross multiply
    89,873.76x = 124,025.78 × 50,129.76
  4. Step 4: Simplify right side
    89,873.76x = 6,217,382,585.21
  5. Step 5: Solve for x
    x = 6,217,382,585.21/89,873.76
  6. Step 6: Final answer
    x = 69,179.06

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1.5x scale

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.