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Finding the Fourth Proportional to 90,409.91, 124,761.20 and 50,123.34

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Solution

The fourth proportional to 90,409.91, 124,761.20 and 50,123.34 is: 69,167.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,409.91 : 124,761.20 = 50,123.34 : x
  2. Step 2: Convert to fraction form
    90,409.91/124,761.20 = 50,123.34/x
  3. Step 3: Cross multiply
    90,409.91x = 124,761.20 × 50,123.34
  4. Step 4: Simplify right side
    90,409.91x = 6,253,447,795.79
  5. Step 5: Solve for x
    x = 6,253,447,795.79/90,409.91
  6. Step 6: Final answer
    x = 69,167.73

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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.