Home / 76,439.33-114,664.05-20,278.65

Finding the Fourth Proportional to 76,439.33, 114,664.05 and 20,278.65

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Solution

The fourth proportional to 76,439.33, 114,664.05 and 20,278.65 is: 30,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,439.33 : 114,664.05 = 20,278.65 : x
  2. Step 2: Convert to fraction form
    76,439.33/114,664.05 = 20,278.65/x
  3. Step 3: Cross multiply
    76,439.33x = 114,664.05 × 20,278.65
  4. Step 4: Simplify right side
    76,439.33x = 2,325,232,137.53
  5. Step 5: Solve for x
    x = 2,325,232,137.53/76,439.33
  6. Step 6: Final answer
    x = 30,419.32

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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.