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Finding the Fourth Proportional to 88,234.40, 121,621.92 and 69,081.92

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Solution

The fourth proportional to 88,234.40, 121,621.92 and 69,081.92 is: 95,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,234.40 : 121,621.92 = 69,081.92 : x
  2. Step 2: Convert to fraction form
    88,234.40/121,621.92 = 69,081.92/x
  3. Step 3: Cross multiply
    88,234.40x = 121,621.92 × 69,081.92
  4. Step 4: Simplify right side
    88,234.40x = 8,401,875,747.69
  5. Step 5: Solve for x
    x = 8,401,875,747.69/88,234.40
  6. Step 6: Final answer
    x = 95,222.22

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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.