Home / 79,579.53-119,369.32-20,415.20

Finding the Fourth Proportional to 79,579.53, 119,369.32 and 20,415.20

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Solution

The fourth proportional to 79,579.53, 119,369.32 and 20,415.20 is: 30,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,579.53 : 119,369.32 = 20,415.20 : x
  2. Step 2: Convert to fraction form
    79,579.53/119,369.32 = 20,415.20/x
  3. Step 3: Cross multiply
    79,579.53x = 119,369.32 × 20,415.20
  4. Step 4: Simplify right side
    79,579.53x = 2,436,947,893.78
  5. Step 5: Solve for x
    x = 2,436,947,893.78/79,579.53
  6. Step 6: Final answer
    x = 30,622.80

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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.