Home / 84,859.48-127,289.21-21,679.73

Finding the Fourth Proportional to 84,859.48, 127,289.21 and 21,679.73

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Solution

The fourth proportional to 84,859.48, 127,289.21 and 21,679.73 is: 32,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,859.48 : 127,289.21 = 21,679.73 : x
  2. Step 2: Convert to fraction form
    84,859.48/127,289.21 = 21,679.73/x
  3. Step 3: Cross multiply
    84,859.48x = 127,289.21 × 21,679.73
  4. Step 4: Simplify right side
    84,859.48x = 2,759,595,596.31
  5. Step 5: Solve for x
    x = 2,759,595,596.31/84,859.48
  6. Step 6: Final answer
    x = 32,519.59

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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.