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Finding the Fourth Proportional to 63,669, 95,503.50 and 19,893

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Solution

The fourth proportional to 63,669, 95,503.50 and 19,893 is: 29,839.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,669 : 95,503.50 = 19,893 : x
  2. Step 2: Convert to fraction form
    63,669/95,503.50 = 19,893/x
  3. Step 3: Cross multiply
    63,669x = 95,503.50 × 19,893
  4. Step 4: Simplify right side
    63,669x = 1,899,851,125.50
  5. Step 5: Solve for x
    x = 1,899,851,125.50/63,669
  6. Step 6: Final answer
    x = 29,839.50

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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.