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Finding the Fourth Proportional to 72,495.97, 100,049.88 and 40,236.67

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Solution

The fourth proportional to 72,495.97, 100,049.88 and 40,236.67 is: 55,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.97 : 100,049.88 = 40,236.67 : x
  2. Step 2: Convert to fraction form
    72,495.97/100,049.88 = 40,236.67/x
  3. Step 3: Cross multiply
    72,495.97x = 100,049.88 × 40,236.67
  4. Step 4: Simplify right side
    72,495.97x = 4,025,674,005.10
  5. Step 5: Solve for x
    x = 4,025,674,005.10/72,495.97
  6. Step 6: Final answer
    x = 55,529.62

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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.