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Finding the Fourth Proportional to 63,640.20, 87,821.05 and 35,347.71

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Solution

The fourth proportional to 63,640.20, 87,821.05 and 35,347.71 is: 48,778.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,640.20 : 87,821.05 = 35,347.71 : x
  2. Step 2: Convert to fraction form
    63,640.20/87,821.05 = 35,347.71/x
  3. Step 3: Cross multiply
    63,640.20x = 87,821.05 × 35,347.71
  4. Step 4: Simplify right side
    63,640.20x = 3,104,273,007.30
  5. Step 5: Solve for x
    x = 3,104,273,007.30/63,640.20
  6. Step 6: Final answer
    x = 48,778.49

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1.5x scale

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.