Home / 71,919.28-107,878.83-19,328.74

Finding the Fourth Proportional to 71,919.28, 107,878.83 and 19,328.74

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Solution

The fourth proportional to 71,919.28, 107,878.83 and 19,328.74 is: 28,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,919.28 : 107,878.83 = 19,328.74 : x
  2. Step 2: Convert to fraction form
    71,919.28/107,878.83 = 19,328.74/x
  3. Step 3: Cross multiply
    71,919.28x = 107,878.83 × 19,328.74
  4. Step 4: Simplify right side
    71,919.28x = 2,085,161,856.57
  5. Step 5: Solve for x
    x = 2,085,161,856.57/71,919.28
  6. Step 6: Final answer
    x = 28,993.09

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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.