Home / 75,979.46-113,969.24-19,819.50

Finding the Fourth Proportional to 75,979.46, 113,969.24 and 19,819.50

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Solution

The fourth proportional to 75,979.46, 113,969.24 and 19,819.50 is: 29,729.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,979.46 : 113,969.24 = 19,819.50 : x
  2. Step 2: Convert to fraction form
    75,979.46/113,969.24 = 19,819.50/x
  3. Step 3: Cross multiply
    75,979.46x = 113,969.24 × 19,819.50
  4. Step 4: Simplify right side
    75,979.46x = 2,258,813,088.16
  5. Step 5: Solve for x
    x = 2,258,813,088.16/75,979.46
  6. Step 6: Final answer
    x = 29,729.26

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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.