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Finding the Fourth Proportional to 63,677.78, 87,875.87 and 39,818.29

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Solution

The fourth proportional to 63,677.78, 87,875.87 and 39,818.29 is: 54,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,677.78 : 87,875.87 = 39,818.29 : x
  2. Step 2: Convert to fraction form
    63,677.78/87,875.87 = 39,818.29/x
  3. Step 3: Cross multiply
    63,677.78x = 87,875.87 × 39,818.29
  4. Step 4: Simplify right side
    63,677.78x = 3,499,066,875.66
  5. Step 5: Solve for x
    x = 3,499,066,875.66/63,677.78
  6. Step 6: Final answer
    x = 54,949.57

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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.