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Finding the Fourth Proportional to 84,850.80, 127,103.40 and 43,321.20

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Solution

The fourth proportional to 84,850.80, 127,103.40 and 43,321.20 is: 64,893.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,850.80 : 127,103.40 = 43,321.20 : x
  2. Step 2: Convert to fraction form
    84,850.80/127,103.40 = 43,321.20/x
  3. Step 3: Cross multiply
    84,850.80x = 127,103.40 × 43,321.20
  4. Step 4: Simplify right side
    84,850.80x = 5,506,271,812.08
  5. Step 5: Solve for x
    x = 5,506,271,812.08/84,850.80
  6. Step 6: Final answer
    x = 64,893.58

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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.