Home / 53,415.07-80,066.10-20,120.73

Finding the Fourth Proportional to 53,415.07, 80,066.10 and 20,120.73

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Solution

The fourth proportional to 53,415.07, 80,066.10 and 20,120.73 is: 30,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,415.07 : 80,066.10 = 20,120.73 : x
  2. Step 2: Convert to fraction form
    53,415.07/80,066.10 = 20,120.73/x
  3. Step 3: Cross multiply
    53,415.07x = 80,066.10 × 20,120.73
  4. Step 4: Simplify right side
    53,415.07x = 1,610,988,380.25
  5. Step 5: Solve for x
    x = 1,610,988,380.25/53,415.07
  6. Step 6: Final answer
    x = 30,159.81

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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.