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Finding the Fourth Proportional to 63,656.05, 87,808.79 and 39,741.20

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Solution

The fourth proportional to 63,656.05, 87,808.79 and 39,741.20 is: 54,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,656.05 : 87,808.79 = 39,741.20 : x
  2. Step 2: Convert to fraction form
    63,656.05/87,808.79 = 39,741.20/x
  3. Step 3: Cross multiply
    63,656.05x = 87,808.79 × 39,741.20
  4. Step 4: Simplify right side
    63,656.05x = 3,489,626,685.15
  5. Step 5: Solve for x
    x = 3,489,626,685.15/63,656.05
  6. Step 6: Final answer
    x = 54,820.04

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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.