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Finding the Fourth Proportional to 84,893.40, 127,340.10 and 54,955.80

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Solution

The fourth proportional to 84,893.40, 127,340.10 and 54,955.80 is: 82,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,893.40 : 127,340.10 = 54,955.80 : x
  2. Step 2: Convert to fraction form
    84,893.40/127,340.10 = 54,955.80/x
  3. Step 3: Cross multiply
    84,893.40x = 127,340.10 × 54,955.80
  4. Step 4: Simplify right side
    84,893.40x = 6,998,077,067.58
  5. Step 5: Solve for x
    x = 6,998,077,067.58/84,893.40
  6. Step 6: Final answer
    x = 82,433.70

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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.