Home / 50,421.12-75,631.77-20,806.44

Finding the Fourth Proportional to 50,421.12, 75,631.77 and 20,806.44

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Solution

The fourth proportional to 50,421.12, 75,631.77 and 20,806.44 is: 31,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,421.12 : 75,631.77 = 20,806.44 : x
  2. Step 2: Convert to fraction form
    50,421.12/75,631.77 = 20,806.44/x
  3. Step 3: Cross multiply
    50,421.12x = 75,631.77 × 20,806.44
  4. Step 4: Simplify right side
    50,421.12x = 1,573,627,884.60
  5. Step 5: Solve for x
    x = 1,573,627,884.60/50,421.12
  6. Step 6: Final answer
    x = 31,209.70

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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.