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Finding the Fourth Proportional to 79,575.55, 119,360.49 and 20,411.80

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Solution

The fourth proportional to 79,575.55, 119,360.49 and 20,411.80 is: 30,616.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,575.55 : 119,360.49 = 20,411.80 : x
  2. Step 2: Convert to fraction form
    79,575.55/119,360.49 = 20,411.80/x
  3. Step 3: Cross multiply
    79,575.55x = 119,360.49 × 20,411.80
  4. Step 4: Simplify right side
    79,575.55x = 2,436,362,074.84
  5. Step 5: Solve for x
    x = 2,436,362,074.84/79,575.55
  6. Step 6: Final answer
    x = 30,616.97

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1.5x scale

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.