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Finding the Fourth Proportional to 45,072.48, 67,605.48 and 20,114.76

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Solution

The fourth proportional to 45,072.48, 67,605.48 and 20,114.76 is: 30,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,072.48 : 67,605.48 = 20,114.76 : x
  2. Step 2: Convert to fraction form
    45,072.48/67,605.48 = 20,114.76/x
  3. Step 3: Cross multiply
    45,072.48x = 67,605.48 × 20,114.76
  4. Step 4: Simplify right side
    45,072.48x = 1,359,868,004.88
  5. Step 5: Solve for x
    x = 1,359,868,004.88/45,072.48
  6. Step 6: Final answer
    x = 30,170.69

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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.