Home / 48,139.81-72,209.72-18,145.92

Finding the Fourth Proportional to 48,139.81, 72,209.72 and 18,145.92

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Solution

The fourth proportional to 48,139.81, 72,209.72 and 18,145.92 is: 27,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,139.81 : 72,209.72 = 18,145.92 : x
  2. Step 2: Convert to fraction form
    48,139.81/72,209.72 = 18,145.92/x
  3. Step 3: Cross multiply
    48,139.81x = 72,209.72 × 18,145.92
  4. Step 4: Simplify right side
    48,139.81x = 1,310,311,508.87
  5. Step 5: Solve for x
    x = 1,310,311,508.87/48,139.81
  6. Step 6: Final answer
    x = 27,218.88

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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.