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Finding the Fourth Proportional to 63,765, 87,993.90 and 35,471.64

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Solution

The fourth proportional to 63,765, 87,993.90 and 35,471.64 is: 48,949.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,765 : 87,993.90 = 35,471.64 : x
  2. Step 2: Convert to fraction form
    63,765/87,993.90 = 35,471.64/x
  3. Step 3: Cross multiply
    63,765x = 87,993.90 × 35,471.64
  4. Step 4: Simplify right side
    63,765x = 3,121,287,943.00
  5. Step 5: Solve for x
    x = 3,121,287,943.00/63,765
  6. Step 6: Final answer
    x = 48,949.86

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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.