Home / 81,556.32-112,545.93-45,745.56

Finding the Fourth Proportional to 81,556.32, 112,545.93 and 45,745.56

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Solution

The fourth proportional to 81,556.32, 112,545.93 and 45,745.56 is: 63,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,556.32 : 112,545.93 = 45,745.56 : x
  2. Step 2: Convert to fraction form
    81,556.32/112,545.93 = 45,745.56/x
  3. Step 3: Cross multiply
    81,556.32x = 112,545.93 × 45,745.56
  4. Step 4: Simplify right side
    81,556.32x = 5,148,476,593.57
  5. Step 5: Solve for x
    x = 5,148,476,593.57/81,556.32
  6. Step 6: Final answer
    x = 63,127.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.