Home / 81,399.32-122,079.34-22,235.30

Finding the Fourth Proportional to 81,399.32, 122,079.34 and 22,235.30

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Solution

The fourth proportional to 81,399.32, 122,079.34 and 22,235.30 is: 33,347.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399.32 : 122,079.34 = 22,235.30 : x
  2. Step 2: Convert to fraction form
    81,399.32/122,079.34 = 22,235.30/x
  3. Step 3: Cross multiply
    81,399.32x = 122,079.34 × 22,235.30
  4. Step 4: Simplify right side
    81,399.32x = 2,714,470,748.70
  5. Step 5: Solve for x
    x = 2,714,470,748.70/81,399.32
  6. Step 6: Final answer
    x = 33,347.59

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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.