Home / 54,146.86-81,200.85-20,850.19

Finding the Fourth Proportional to 54,146.86, 81,200.85 and 20,850.19

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Solution

The fourth proportional to 54,146.86, 81,200.85 and 20,850.19 is: 31,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,146.86 : 81,200.85 = 20,850.19 : x
  2. Step 2: Convert to fraction form
    54,146.86/81,200.85 = 20,850.19/x
  3. Step 3: Cross multiply
    54,146.86x = 81,200.85 × 20,850.19
  4. Step 4: Simplify right side
    54,146.86x = 1,693,052,869.47
  5. Step 5: Solve for x
    x = 1,693,052,869.47/54,146.86
  6. Step 6: Final answer
    x = 31,267.80

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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.