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Finding the Fourth Proportional to 54,685.80, 82,028.70 and 45,937.80

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Solution

The fourth proportional to 54,685.80, 82,028.70 and 45,937.80 is: 68,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,685.80 : 82,028.70 = 45,937.80 : x
  2. Step 2: Convert to fraction form
    54,685.80/82,028.70 = 45,937.80/x
  3. Step 3: Cross multiply
    54,685.80x = 82,028.70 × 45,937.80
  4. Step 4: Simplify right side
    54,685.80x = 3,768,218,014.86
  5. Step 5: Solve for x
    x = 3,768,218,014.86/54,685.80
  6. Step 6: Final answer
    x = 68,906.70

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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.