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Finding the Fourth Proportional to 73,809.40, 110,730.30 and 36,387.40

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Solution

The fourth proportional to 73,809.40, 110,730.30 and 36,387.40 is: 54,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,809.40 : 110,730.30 = 36,387.40 : x
  2. Step 2: Convert to fraction form
    73,809.40/110,730.30 = 36,387.40/x
  3. Step 3: Cross multiply
    73,809.40x = 110,730.30 × 36,387.40
  4. Step 4: Simplify right side
    73,809.40x = 4,029,187,718.22
  5. Step 5: Solve for x
    x = 4,029,187,718.22/73,809.40
  6. Step 6: Final answer
    x = 54,589.09

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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.