Home / 54,031.12-81,014.66-18,479.86

Finding the Fourth Proportional to 54,031.12, 81,014.66 and 18,479.86

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Solution

The fourth proportional to 54,031.12, 81,014.66 and 18,479.86 is: 27,708.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,031.12 : 81,014.66 = 18,479.86 : x
  2. Step 2: Convert to fraction form
    54,031.12/81,014.66 = 18,479.86/x
  3. Step 3: Cross multiply
    54,031.12x = 81,014.66 × 18,479.86
  4. Step 4: Simplify right side
    54,031.12x = 1,497,139,574.75
  5. Step 5: Solve for x
    x = 1,497,139,574.75/54,031.12
  6. Step 6: Final answer
    x = 27,708.84

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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.