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Finding the Fourth Proportional to 63,243.21, 87,278.99 and 36,389.80

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Solution

The fourth proportional to 63,243.21, 87,278.99 and 36,389.80 is: 50,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,243.21 : 87,278.99 = 36,389.80 : x
  2. Step 2: Convert to fraction form
    63,243.21/87,278.99 = 36,389.80/x
  3. Step 3: Cross multiply
    63,243.21x = 87,278.99 × 36,389.80
  4. Step 4: Simplify right side
    63,243.21x = 3,176,064,990.30
  5. Step 5: Solve for x
    x = 3,176,064,990.30/63,243.21
  6. Step 6: Final answer
    x = 50,219.86

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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.