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Finding the Fourth Proportional to 45,101.69, 67,616.08 and 18,826.10

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Solution

The fourth proportional to 45,101.69, 67,616.08 and 18,826.10 is: 28,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,101.69 : 67,616.08 = 18,826.10 : x
  2. Step 2: Convert to fraction form
    45,101.69/67,616.08 = 18,826.10/x
  3. Step 3: Cross multiply
    45,101.69x = 67,616.08 × 18,826.10
  4. Step 4: Simplify right side
    45,101.69x = 1,272,946,989.56
  5. Step 5: Solve for x
    x = 1,272,946,989.56/45,101.69
  6. Step 6: Final answer
    x = 28,223.93

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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.