Home / 54,172.20-81,323.10-30,498.60

Finding the Fourth Proportional to 54,172.20, 81,323.10 and 30,498.60

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Solution

The fourth proportional to 54,172.20, 81,323.10 and 30,498.60 is: 45,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,172.20 : 81,323.10 = 30,498.60 : x
  2. Step 2: Convert to fraction form
    54,172.20/81,323.10 = 30,498.60/x
  3. Step 3: Cross multiply
    54,172.20x = 81,323.10 × 30,498.60
  4. Step 4: Simplify right side
    54,172.20x = 2,480,240,697.66
  5. Step 5: Solve for x
    x = 2,480,240,697.66/54,172.20
  6. Step 6: Final answer
    x = 45,784.38

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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.