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Finding the Fourth Proportional to 45,110.40, 67,665.60 and 20,150.40

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Solution

The fourth proportional to 45,110.40, 67,665.60 and 20,150.40 is: 30,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,110.40 : 67,665.60 = 20,150.40 : x
  2. Step 2: Convert to fraction form
    45,110.40/67,665.60 = 20,150.40/x
  3. Step 3: Cross multiply
    45,110.40x = 67,665.60 × 20,150.40
  4. Step 4: Simplify right side
    45,110.40x = 1,363,488,906.24
  5. Step 5: Solve for x
    x = 1,363,488,906.24/45,110.40
  6. Step 6: Final answer
    x = 30,225.60

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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.