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Finding the Fourth Proportional to 45,069.74, 67,606.29 and 13,480.21

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Solution

The fourth proportional to 45,069.74, 67,606.29 and 13,480.21 is: 20,220.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,069.74 : 67,606.29 = 13,480.21 : x
  2. Step 2: Convert to fraction form
    45,069.74/67,606.29 = 13,480.21/x
  3. Step 3: Cross multiply
    45,069.74x = 67,606.29 × 13,480.21
  4. Step 4: Simplify right side
    45,069.74x = 911,346,581.09
  5. Step 5: Solve for x
    x = 911,346,581.09/45,069.74
  6. Step 6: Final answer
    x = 20,220.81

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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.