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Finding the Fourth Proportional to 88,990.72, 122,545.92 and 79,555.84

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Solution

The fourth proportional to 88,990.72, 122,545.92 and 79,555.84 is: 109,553.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,990.72 : 122,545.92 = 79,555.84 : x
  2. Step 2: Convert to fraction form
    88,990.72/122,545.92 = 79,555.84/x
  3. Step 3: Cross multiply
    88,990.72x = 122,545.92 × 79,555.84
  4. Step 4: Simplify right side
    88,990.72x = 9,749,243,604.17
  5. Step 5: Solve for x
    x = 9,749,243,604.17/88,990.72
  6. Step 6: Final answer
    x = 109,553.49

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1.5x scale

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.