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Finding the Fourth Proportional to 84,735.62, 127,104.15 and 21,555.80

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Solution

The fourth proportional to 84,735.62, 127,104.15 and 21,555.80 is: 32,333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,735.62 : 127,104.15 = 21,555.80 : x
  2. Step 2: Convert to fraction form
    84,735.62/127,104.15 = 21,555.80/x
  3. Step 3: Cross multiply
    84,735.62x = 127,104.15 × 21,555.80
  4. Step 4: Simplify right side
    84,735.62x = 2,739,831,558.52
  5. Step 5: Solve for x
    x = 2,739,831,558.52/84,735.62
  6. Step 6: Final answer
    x = 32,333.88

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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.