Home / 72,142.08-108,154.85-30,053.87

Finding the Fourth Proportional to 72,142.08, 108,154.85 and 30,053.87

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Solution

The fourth proportional to 72,142.08, 108,154.85 and 30,053.87 is: 45,056.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,142.08 : 108,154.85 = 30,053.87 : x
  2. Step 2: Convert to fraction form
    72,142.08/108,154.85 = 30,053.87/x
  3. Step 3: Cross multiply
    72,142.08x = 108,154.85 × 30,053.87
  4. Step 4: Simplify right side
    72,142.08x = 3,250,471,516.31
  5. Step 5: Solve for x
    x = 3,250,471,516.31/72,142.08
  6. Step 6: Final answer
    x = 45,056.53

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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.