Home / 81,535.56-122,315.46-28,940.64

Finding the Fourth Proportional to 81,535.56, 122,315.46 and 28,940.64

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Solution

The fourth proportional to 81,535.56, 122,315.46 and 28,940.64 is: 43,415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,535.56 : 122,315.46 = 28,940.64 : x
  2. Step 2: Convert to fraction form
    81,535.56/122,315.46 = 28,940.64/x
  3. Step 3: Cross multiply
    81,535.56x = 122,315.46 × 28,940.64
  4. Step 4: Simplify right side
    81,535.56x = 3,539,887,694.29
  5. Step 5: Solve for x
    x = 3,539,887,694.29/81,535.56
  6. Step 6: Final answer
    x = 43,415.26

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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.