Home / 72,635.38-100,247.16-40,806.43

Finding the Fourth Proportional to 72,635.38, 100,247.16 and 40,806.43

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Solution

The fourth proportional to 72,635.38, 100,247.16 and 40,806.43 is: 56,318.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,635.38 : 100,247.16 = 40,806.43 : x
  2. Step 2: Convert to fraction form
    72,635.38/100,247.16 = 40,806.43/x
  3. Step 3: Cross multiply
    72,635.38x = 100,247.16 × 40,806.43
  4. Step 4: Simplify right side
    72,635.38x = 4,090,728,717.24
  5. Step 5: Solve for x
    x = 4,090,728,717.24/72,635.38
  6. Step 6: Final answer
    x = 56,318.68

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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.