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Finding the Fourth Proportional to 63,215.56, 87,254.85 and 39,327.99

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Solution

The fourth proportional to 63,215.56, 87,254.85 and 39,327.99 is: 54,283.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,215.56 : 87,254.85 = 39,327.99 : x
  2. Step 2: Convert to fraction form
    63,215.56/87,254.85 = 39,327.99/x
  3. Step 3: Cross multiply
    63,215.56x = 87,254.85 × 39,327.99
  4. Step 4: Simplify right side
    63,215.56x = 3,431,557,868.25
  5. Step 5: Solve for x
    x = 3,431,557,868.25/63,215.56
  6. Step 6: Final answer
    x = 54,283.44

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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.