Home / 81,705.13-122,557.80-25,545.54

Finding the Fourth Proportional to 81,705.13, 122,557.80 and 25,545.54

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Solution

The fourth proportional to 81,705.13, 122,557.80 and 25,545.54 is: 38,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,705.13 : 122,557.80 = 25,545.54 : x
  2. Step 2: Convert to fraction form
    81,705.13/122,557.80 = 25,545.54/x
  3. Step 3: Cross multiply
    81,705.13x = 122,557.80 × 25,545.54
  4. Step 4: Simplify right side
    81,705.13x = 3,130,804,441.70
  5. Step 5: Solve for x
    x = 3,130,804,441.70/81,705.13
  6. Step 6: Final answer
    x = 38,318.33

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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.