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Finding the Fourth Proportional to 72,562.20, 100,123.20 and 40,732.44

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Solution

The fourth proportional to 72,562.20, 100,123.20 and 40,732.44 is: 56,203.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,562.20 : 100,123.20 = 40,732.44 : x
  2. Step 2: Convert to fraction form
    72,562.20/100,123.20 = 40,732.44/x
  3. Step 3: Cross multiply
    72,562.20x = 100,123.20 × 40,732.44
  4. Step 4: Simplify right side
    72,562.20x = 4,078,262,236.61
  5. Step 5: Solve for x
    x = 4,078,262,236.61/72,562.20
  6. Step 6: Final answer
    x = 56,203.67

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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.