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Finding the Fourth Proportional to 45,066.61, 67,609.62 and 13,479.18

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Solution

The fourth proportional to 45,066.61, 67,609.62 and 13,479.18 is: 20,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,066.61 : 67,609.62 = 13,479.18 : x
  2. Step 2: Convert to fraction form
    45,066.61/67,609.62 = 13,479.18/x
  3. Step 3: Cross multiply
    45,066.61x = 67,609.62 × 13,479.18
  4. Step 4: Simplify right side
    45,066.61x = 911,322,237.71
  5. Step 5: Solve for x
    x = 911,322,237.71/45,066.61
  6. Step 6: Final answer
    x = 20,221.67

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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.