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Finding the Fourth Proportional to 73,126.40, 109,689.60 and 41,964.80

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Solution

The fourth proportional to 73,126.40, 109,689.60 and 41,964.80 is: 62,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,126.40 : 109,689.60 = 41,964.80 : x
  2. Step 2: Convert to fraction form
    73,126.40/109,689.60 = 41,964.80/x
  3. Step 3: Cross multiply
    73,126.40x = 109,689.60 × 41,964.80
  4. Step 4: Simplify right side
    73,126.40x = 4,603,102,126.08
  5. Step 5: Solve for x
    x = 4,603,102,126.08/73,126.40
  6. Step 6: Final answer
    x = 62,947.20

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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.