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Finding the Fourth Proportional to 72,151.48, 108,226.50 and 40,151.08

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Solution

The fourth proportional to 72,151.48, 108,226.50 and 40,151.08 is: 60,226.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,151.48 : 108,226.50 = 40,151.08 : x
  2. Step 2: Convert to fraction form
    72,151.48/108,226.50 = 40,151.08/x
  3. Step 3: Cross multiply
    72,151.48x = 108,226.50 × 40,151.08
  4. Step 4: Simplify right side
    72,151.48x = 4,345,410,859.62
  5. Step 5: Solve for x
    x = 4,345,410,859.62/72,151.48
  6. Step 6: Final answer
    x = 60,226.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.