Home / 45,066.78-67,609.82-13,479.28

Finding the Fourth Proportional to 45,066.78, 67,609.82 and 13,479.28

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Solution

The fourth proportional to 45,066.78, 67,609.82 and 13,479.28 is: 20,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,066.78 : 67,609.82 = 13,479.28 : x
  2. Step 2: Convert to fraction form
    45,066.78/67,609.82 = 13,479.28/x
  3. Step 3: Cross multiply
    45,066.78x = 67,609.82 × 13,479.28
  4. Step 4: Simplify right side
    45,066.78x = 911,331,559.20
  5. Step 5: Solve for x
    x = 911,331,559.20/45,066.78
  6. Step 6: Final answer
    x = 20,221.80

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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.