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Finding the Fourth Proportional to 72,358.12, 108,500.16 and 30,226.71

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Solution

The fourth proportional to 72,358.12, 108,500.16 and 30,226.71 is: 45,324.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,358.12 : 108,500.16 = 30,226.71 : x
  2. Step 2: Convert to fraction form
    72,358.12/108,500.16 = 30,226.71/x
  3. Step 3: Cross multiply
    72,358.12x = 108,500.16 × 30,226.71
  4. Step 4: Simplify right side
    72,358.12x = 3,279,602,871.27
  5. Step 5: Solve for x
    x = 3,279,602,871.27/72,358.12
  6. Step 6: Final answer
    x = 45,324.60

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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.