Home / 54,698.10-81,989.55-21,405.30

Finding the Fourth Proportional to 54,698.10, 81,989.55 and 21,405.30

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Solution

The fourth proportional to 54,698.10, 81,989.55 and 21,405.30 is: 32,085.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,698.10 : 81,989.55 = 21,405.30 : x
  2. Step 2: Convert to fraction form
    54,698.10/81,989.55 = 21,405.30/x
  3. Step 3: Cross multiply
    54,698.10x = 81,989.55 × 21,405.30
  4. Step 4: Simplify right side
    54,698.10x = 1,755,010,914.62
  5. Step 5: Solve for x
    x = 1,755,010,914.62/54,698.10
  6. Step 6: Final answer
    x = 32,085.41

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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.