Home / 54,533.30-81,739.20-21,242.30

Finding the Fourth Proportional to 54,533.30, 81,739.20 and 21,242.30

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Solution

The fourth proportional to 54,533.30, 81,739.20 and 21,242.30 is: 31,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,533.30 : 81,739.20 = 21,242.30 : x
  2. Step 2: Convert to fraction form
    54,533.30/81,739.20 = 21,242.30/x
  3. Step 3: Cross multiply
    54,533.30x = 81,739.20 × 21,242.30
  4. Step 4: Simplify right side
    54,533.30x = 1,736,328,608.16
  5. Step 5: Solve for x
    x = 1,736,328,608.16/54,533.30
  6. Step 6: Final answer
    x = 31,839.79

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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.