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Finding the Fourth Proportional to 50,121, 75,123.18 and 20,502.95

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Solution

The fourth proportional to 50,121, 75,123.18 and 20,502.95 is: 30,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,121 : 75,123.18 = 20,502.95 : x
  2. Step 2: Convert to fraction form
    50,121/75,123.18 = 20,502.95/x
  3. Step 3: Cross multiply
    50,121x = 75,123.18 × 20,502.95
  4. Step 4: Simplify right side
    50,121x = 1,540,246,427.77
  5. Step 5: Solve for x
    x = 1,540,246,427.77/50,121
  6. Step 6: Final answer
    x = 30,730.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.