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Finding the Fourth Proportional to 54,323.80, 81,485.70 and 30,704.20

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Solution

The fourth proportional to 54,323.80, 81,485.70 and 30,704.20 is: 46,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,323.80 : 81,485.70 = 30,704.20 : x
  2. Step 2: Convert to fraction form
    54,323.80/81,485.70 = 30,704.20/x
  3. Step 3: Cross multiply
    54,323.80x = 81,485.70 × 30,704.20
  4. Step 4: Simplify right side
    54,323.80x = 2,501,953,229.94
  5. Step 5: Solve for x
    x = 2,501,953,229.94/54,323.80
  6. Step 6: Final answer
    x = 46,056.30

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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.