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Finding the Fourth Proportional to 88,711, 133,103.04 and 65,138.92

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Solution

The fourth proportional to 88,711, 133,103.04 and 65,138.92 is: 97,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,711 : 133,103.04 = 65,138.92 : x
  2. Step 2: Convert to fraction form
    88,711/133,103.04 = 65,138.92/x
  3. Step 3: Cross multiply
    88,711x = 133,103.04 × 65,138.92
  4. Step 4: Simplify right side
    88,711x = 8,670,188,274.32
  5. Step 5: Solve for x
    x = 8,670,188,274.32/88,711
  6. Step 6: Final answer
    x = 97,735.21

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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.