Home / 53,415.57-80,066.86-20,121.23

Finding the Fourth Proportional to 53,415.57, 80,066.86 and 20,121.23

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Solution

The fourth proportional to 53,415.57, 80,066.86 and 20,121.23 is: 30,160.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,415.57 : 80,066.86 = 20,121.23 : x
  2. Step 2: Convert to fraction form
    53,415.57/80,066.86 = 20,121.23/x
  3. Step 3: Cross multiply
    53,415.57x = 80,066.86 × 20,121.23
  4. Step 4: Simplify right side
    53,415.57x = 1,611,043,855.30
  5. Step 5: Solve for x
    x = 1,611,043,855.30/53,415.57
  6. Step 6: Final answer
    x = 30,160.57

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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.