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Finding the Fourth Proportional to 72,516.54, 108,663.55 and 30,373.56

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Solution

The fourth proportional to 72,516.54, 108,663.55 and 30,373.56 is: 45,513.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,516.54 : 108,663.55 = 30,373.56 : x
  2. Step 2: Convert to fraction form
    72,516.54/108,663.55 = 30,373.56/x
  3. Step 3: Cross multiply
    72,516.54x = 108,663.55 × 30,373.56
  4. Step 4: Simplify right side
    72,516.54x = 3,300,498,855.74
  5. Step 5: Solve for x
    x = 3,300,498,855.74/72,516.54
  6. Step 6: Final answer
    x = 45,513.74

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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.