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Finding the Fourth Proportional to 65,355.05, 90,188.84 and 36,675.38

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Solution

The fourth proportional to 65,355.05, 90,188.84 and 36,675.38 is: 50,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,355.05 : 90,188.84 = 36,675.38 : x
  2. Step 2: Convert to fraction form
    65,355.05/90,188.84 = 36,675.38/x
  3. Step 3: Cross multiply
    65,355.05x = 90,188.84 × 36,675.38
  4. Step 4: Simplify right side
    65,355.05x = 3,307,710,295.92
  5. Step 5: Solve for x
    x = 3,307,710,295.92/65,355.05
  6. Step 6: Final answer
    x = 50,611.39

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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.