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Finding the Fourth Proportional to 72,495.39, 100,043.43 and 40,234.88

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Solution

The fourth proportional to 72,495.39, 100,043.43 and 40,234.88 is: 55,524.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.39 : 100,043.43 = 40,234.88 : x
  2. Step 2: Convert to fraction form
    72,495.39/100,043.43 = 40,234.88/x
  3. Step 3: Cross multiply
    72,495.39x = 100,043.43 × 40,234.88
  4. Step 4: Simplify right side
    72,495.39x = 4,025,235,526.91
  5. Step 5: Solve for x
    x = 4,025,235,526.91/72,495.39
  6. Step 6: Final answer
    x = 55,524.02

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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.