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Finding the Fourth Proportional to 88,434, 122,040 and 50,711.76

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Solution

The fourth proportional to 88,434, 122,040 and 50,711.76 is: 69,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,434 : 122,040 = 50,711.76 : x
  2. Step 2: Convert to fraction form
    88,434/122,040 = 50,711.76/x
  3. Step 3: Cross multiply
    88,434x = 122,040 × 50,711.76
  4. Step 4: Simplify right side
    88,434x = 6,188,863,190.40
  5. Step 5: Solve for x
    x = 6,188,863,190.40/88,434
  6. Step 6: Final answer
    x = 69,982.85

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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.