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Finding the Fourth Proportional to 39,630, 54,689.40 and 22,863

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Solution

The fourth proportional to 39,630, 54,689.40 and 22,863 is: 31,550.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630 : 54,689.40 = 22,863 : x
  2. Step 2: Convert to fraction form
    39,630/54,689.40 = 22,863/x
  3. Step 3: Cross multiply
    39,630x = 54,689.40 × 22,863
  4. Step 4: Simplify right side
    39,630x = 1,250,363,752.20
  5. Step 5: Solve for x
    x = 1,250,363,752.20/39,630
  6. Step 6: Final answer
    x = 31,550.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.