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Finding the Fourth Proportional to 63,586.64, 87,749.94 and 39,727.20

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Solution

The fourth proportional to 63,586.64, 87,749.94 and 39,727.20 is: 54,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,586.64 : 87,749.94 = 39,727.20 : x
  2. Step 2: Convert to fraction form
    63,586.64/87,749.94 = 39,727.20/x
  3. Step 3: Cross multiply
    63,586.64x = 87,749.94 × 39,727.20
  4. Step 4: Simplify right side
    63,586.64x = 3,486,059,416.37
  5. Step 5: Solve for x
    x = 3,486,059,416.37/63,586.64
  6. Step 6: Final answer
    x = 54,823.77

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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.