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Finding the Fourth Proportional to 72,586.76, 100,168.98 and 40,754.92

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Solution

The fourth proportional to 72,586.76, 100,168.98 and 40,754.92 is: 56,241.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,586.76 : 100,168.98 = 40,754.92 : x
  2. Step 2: Convert to fraction form
    72,586.76/100,168.98 = 40,754.92/x
  3. Step 3: Cross multiply
    72,586.76x = 100,168.98 × 40,754.92
  4. Step 4: Simplify right side
    72,586.76x = 4,082,378,766.38
  5. Step 5: Solve for x
    x = 4,082,378,766.38/72,586.76
  6. Step 6: Final answer
    x = 56,241.37

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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.