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Finding the Fourth Proportional to 84,859.22, 127,288.83 and 21,679.48

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Solution

The fourth proportional to 84,859.22, 127,288.83 and 21,679.48 is: 32,519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,859.22 : 127,288.83 = 21,679.48 : x
  2. Step 2: Convert to fraction form
    84,859.22/127,288.83 = 21,679.48/x
  3. Step 3: Cross multiply
    84,859.22x = 127,288.83 × 21,679.48
  4. Step 4: Simplify right side
    84,859.22x = 2,759,555,325.99
  5. Step 5: Solve for x
    x = 2,759,555,325.99/84,859.22
  6. Step 6: Final answer
    x = 32,519.22

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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.