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Finding the Fourth Proportional to 84,495.60, 126,743.40 and 22,172.40

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Solution

The fourth proportional to 84,495.60, 126,743.40 and 22,172.40 is: 33,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,495.60 : 126,743.40 = 22,172.40 : x
  2. Step 2: Convert to fraction form
    84,495.60/126,743.40 = 22,172.40/x
  3. Step 3: Cross multiply
    84,495.60x = 126,743.40 × 22,172.40
  4. Step 4: Simplify right side
    84,495.60x = 2,810,205,362.16
  5. Step 5: Solve for x
    x = 2,810,205,362.16/84,495.60
  6. Step 6: Final answer
    x = 33,258.60

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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.