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Finding the Fourth Proportional to 45,007.65, 67,512.04 and 13,418.74

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Solution

The fourth proportional to 45,007.65, 67,512.04 and 13,418.74 is: 20,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,007.65 : 67,512.04 = 13,418.74 : x
  2. Step 2: Convert to fraction form
    45,007.65/67,512.04 = 13,418.74/x
  3. Step 3: Cross multiply
    45,007.65x = 67,512.04 × 13,418.74
  4. Step 4: Simplify right side
    45,007.65x = 905,926,766.80
  5. Step 5: Solve for x
    x = 905,926,766.80/45,007.65
  6. Step 6: Final answer
    x = 20,128.28

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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.