Home / 81,685.05-122,533.71-22,520.22

Finding the Fourth Proportional to 81,685.05, 122,533.71 and 22,520.22

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Solution

The fourth proportional to 81,685.05, 122,533.71 and 22,520.22 is: 33,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.05 : 122,533.71 = 22,520.22 : x
  2. Step 2: Convert to fraction form
    81,685.05/122,533.71 = 22,520.22/x
  3. Step 3: Cross multiply
    81,685.05x = 122,533.71 × 22,520.22
  4. Step 4: Simplify right side
    81,685.05x = 2,759,486,106.62
  5. Step 5: Solve for x
    x = 2,759,486,106.62/81,685.05
  6. Step 6: Final answer
    x = 33,782.02

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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.