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Finding the Fourth Proportional to 63,129.96, 94,683.72 and 21,005.88

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Solution

The fourth proportional to 63,129.96, 94,683.72 and 21,005.88 is: 31,505.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,129.96 : 94,683.72 = 21,005.88 : x
  2. Step 2: Convert to fraction form
    63,129.96/94,683.72 = 21,005.88/x
  3. Step 3: Cross multiply
    63,129.96x = 94,683.72 × 21,005.88
  4. Step 4: Simplify right side
    63,129.96x = 1,988,914,860.27
  5. Step 5: Solve for x
    x = 1,988,914,860.27/63,129.96
  6. Step 6: Final answer
    x = 31,505.09

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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.