Home / 45,154.80-67,729.32-20,196.72

Finding the Fourth Proportional to 45,154.80, 67,729.32 and 20,196.72

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Solution

The fourth proportional to 45,154.80, 67,729.32 and 20,196.72 is: 30,293.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,154.80 : 67,729.32 = 20,196.72 : x
  2. Step 2: Convert to fraction form
    45,154.80/67,729.32 = 20,196.72/x
  3. Step 3: Cross multiply
    45,154.80x = 67,729.32 × 20,196.72
  4. Step 4: Simplify right side
    45,154.80x = 1,367,910,111.83
  5. Step 5: Solve for x
    x = 1,367,910,111.83/45,154.80
  6. Step 6: Final answer
    x = 30,293.79

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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.