Home / 81,521.37-122,282.12-22,357.49

Finding the Fourth Proportional to 81,521.37, 122,282.12 and 22,357.49

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Solution

The fourth proportional to 81,521.37, 122,282.12 and 22,357.49 is: 33,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.37 : 122,282.12 = 22,357.49 : x
  2. Step 2: Convert to fraction form
    81,521.37/122,282.12 = 22,357.49/x
  3. Step 3: Cross multiply
    81,521.37x = 122,282.12 × 22,357.49
  4. Step 4: Simplify right side
    81,521.37x = 2,733,920,719.56
  5. Step 5: Solve for x
    x = 2,733,920,719.56/81,521.37
  6. Step 6: Final answer
    x = 33,536.25

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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.