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Finding the Fourth Proportional to 63,670.66, 95,520.78 and 18,690.21

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Solution

The fourth proportional to 63,670.66, 95,520.78 and 18,690.21 is: 28,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,670.66 : 95,520.78 = 18,690.21 : x
  2. Step 2: Convert to fraction form
    63,670.66/95,520.78 = 18,690.21/x
  3. Step 3: Cross multiply
    63,670.66x = 95,520.78 × 18,690.21
  4. Step 4: Simplify right side
    63,670.66x = 1,785,303,437.56
  5. Step 5: Solve for x
    x = 1,785,303,437.56/63,670.66
  6. Step 6: Final answer
    x = 28,039.66

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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.