Home / 81,410.40-122,115.60-54,838.35

Finding the Fourth Proportional to 81,410.40, 122,115.60 and 54,838.35

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Solution

The fourth proportional to 81,410.40, 122,115.60 and 54,838.35 is: 82,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,410.40 : 122,115.60 = 54,838.35 : x
  2. Step 2: Convert to fraction form
    81,410.40/122,115.60 = 54,838.35/x
  3. Step 3: Cross multiply
    81,410.40x = 122,115.60 × 54,838.35
  4. Step 4: Simplify right side
    81,410.40x = 6,696,618,013.26
  5. Step 5: Solve for x
    x = 6,696,618,013.26/81,410.40
  6. Step 6: Final answer
    x = 82,257.53

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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.