Home / 81,813.85-122,756.31-44,400.35

Finding the Fourth Proportional to 81,813.85, 122,756.31 and 44,400.35

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Solution

The fourth proportional to 81,813.85, 122,756.31 and 44,400.35 is: 66,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,813.85 : 122,756.31 = 44,400.35 : x
  2. Step 2: Convert to fraction form
    81,813.85/122,756.31 = 44,400.35/x
  3. Step 3: Cross multiply
    81,813.85x = 122,756.31 × 44,400.35
  4. Step 4: Simplify right side
    81,813.85x = 5,450,423,435.60
  5. Step 5: Solve for x
    x = 5,450,423,435.60/81,813.85
  6. Step 6: Final answer
    x = 66,619.82

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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.