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Finding the Fourth Proportional to 84,894.20, 127,268.40 and 43,341.20

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Solution

The fourth proportional to 84,894.20, 127,268.40 and 43,341.20 is: 64,974.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,894.20 : 127,268.40 = 43,341.20 : x
  2. Step 2: Convert to fraction form
    84,894.20/127,268.40 = 43,341.20/x
  3. Step 3: Cross multiply
    84,894.20x = 127,268.40 × 43,341.20
  4. Step 4: Simplify right side
    84,894.20x = 5,515,965,178.08
  5. Step 5: Solve for x
    x = 5,515,965,178.08/84,894.20
  6. Step 6: Final answer
    x = 64,974.58

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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.