Home / 81,926.40-122,817.60-55,545.60

Finding the Fourth Proportional to 81,926.40, 122,817.60 and 55,545.60

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Solution

The fourth proportional to 81,926.40, 122,817.60 and 55,545.60 is: 83,269.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,926.40 : 122,817.60 = 55,545.60 : x
  2. Step 2: Convert to fraction form
    81,926.40/122,817.60 = 55,545.60/x
  3. Step 3: Cross multiply
    81,926.40x = 122,817.60 × 55,545.60
  4. Step 4: Simplify right side
    81,926.40x = 6,821,977,282.56
  5. Step 5: Solve for x
    x = 6,821,977,282.56/81,926.40
  6. Step 6: Final answer
    x = 83,269.58

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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.