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Finding the Fourth Proportional to 79,524.80, 119,056.80 and 71,230.40

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Solution

The fourth proportional to 79,524.80, 119,056.80 and 71,230.40 is: 106,639.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,524.80 : 119,056.80 = 71,230.40 : x
  2. Step 2: Convert to fraction form
    79,524.80/119,056.80 = 71,230.40/x
  3. Step 3: Cross multiply
    79,524.80x = 119,056.80 × 71,230.40
  4. Step 4: Simplify right side
    79,524.80x = 8,480,463,486.72
  5. Step 5: Solve for x
    x = 8,480,463,486.72/79,524.80
  6. Step 6: Final answer
    x = 106,639.23

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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.