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Finding the Fourth Proportional to 89,931, 124,104.78 and 50,187

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Solution

The fourth proportional to 89,931, 124,104.78 and 50,187 is: 69,258.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,931 : 124,104.78 = 50,187 : x
  2. Step 2: Convert to fraction form
    89,931/124,104.78 = 50,187/x
  3. Step 3: Cross multiply
    89,931x = 124,104.78 × 50,187
  4. Step 4: Simplify right side
    89,931x = 6,228,446,593.86
  5. Step 5: Solve for x
    x = 6,228,446,593.86/89,931
  6. Step 6: Final answer
    x = 69,258.06

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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.