Home / 53,418.21-80,127.21-20,145.74

Finding the Fourth Proportional to 53,418.21, 80,127.21 and 20,145.74

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Solution

The fourth proportional to 53,418.21, 80,127.21 and 20,145.74 is: 30,218.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,418.21 : 80,127.21 = 20,145.74 : x
  2. Step 2: Convert to fraction form
    53,418.21/80,127.21 = 20,145.74/x
  3. Step 3: Cross multiply
    53,418.21x = 80,127.21 × 20,145.74
  4. Step 4: Simplify right side
    53,418.21x = 1,614,221,538.95
  5. Step 5: Solve for x
    x = 1,614,221,538.95/53,418.21
  6. Step 6: Final answer
    x = 30,218.56

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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.