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Finding the Fourth Proportional to 63,402, 87,517.80 and 36,906

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Solution

The fourth proportional to 63,402, 87,517.80 and 36,906 is: 50,943.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,402 : 87,517.80 = 36,906 : x
  2. Step 2: Convert to fraction form
    63,402/87,517.80 = 36,906/x
  3. Step 3: Cross multiply
    63,402x = 87,517.80 × 36,906
  4. Step 4: Simplify right side
    63,402x = 3,229,931,926.80
  5. Step 5: Solve for x
    x = 3,229,931,926.80/63,402
  6. Step 6: Final answer
    x = 50,943.69

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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.