Home / 50,431.68-75,645.08-12,480.79

Finding the Fourth Proportional to 50,431.68, 75,645.08 and 12,480.79

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Solution

The fourth proportional to 50,431.68, 75,645.08 and 12,480.79 is: 18,720.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,431.68 : 75,645.08 = 12,480.79 : x
  2. Step 2: Convert to fraction form
    50,431.68/75,645.08 = 12,480.79/x
  3. Step 3: Cross multiply
    50,431.68x = 75,645.08 × 12,480.79
  4. Step 4: Simplify right side
    50,431.68x = 944,110,358.01
  5. Step 5: Solve for x
    x = 944,110,358.01/50,431.68
  6. Step 6: Final answer
    x = 18,720.58

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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.