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Finding the Fourth Proportional to 88,991.70, 122,806.42 and 48,705.40

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Solution

The fourth proportional to 88,991.70, 122,806.42 and 48,705.40 is: 67,212.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,991.70 : 122,806.42 = 48,705.40 : x
  2. Step 2: Convert to fraction form
    88,991.70/122,806.42 = 48,705.40/x
  3. Step 3: Cross multiply
    88,991.70x = 122,806.42 × 48,705.40
  4. Step 4: Simplify right side
    88,991.70x = 5,981,335,808.67
  5. Step 5: Solve for x
    x = 5,981,335,808.67/88,991.70
  6. Step 6: Final answer
    x = 67,212.29

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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.