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Finding the Fourth Proportional to 72,259.56, 108,318.86 and 30,151.76

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Solution

The fourth proportional to 72,259.56, 108,318.86 and 30,151.76 is: 45,198.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259.56 : 108,318.86 = 30,151.76 : x
  2. Step 2: Convert to fraction form
    72,259.56/108,318.86 = 30,151.76/x
  3. Step 3: Cross multiply
    72,259.56x = 108,318.86 × 30,151.76
  4. Step 4: Simplify right side
    72,259.56x = 3,266,004,270.19
  5. Step 5: Solve for x
    x = 3,266,004,270.19/72,259.56
  6. Step 6: Final answer
    x = 45,198.23

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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.