Home / 85,719.26-128,582.57-26,556.05

Finding the Fourth Proportional to 85,719.26, 128,582.57 and 26,556.05

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Solution

The fourth proportional to 85,719.26, 128,582.57 and 26,556.05 is: 39,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,719.26 : 128,582.57 = 26,556.05 : x
  2. Step 2: Convert to fraction form
    85,719.26/128,582.57 = 26,556.05/x
  3. Step 3: Cross multiply
    85,719.26x = 128,582.57 × 26,556.05
  4. Step 4: Simplify right side
    85,719.26x = 3,414,645,545.90
  5. Step 5: Solve for x
    x = 3,414,645,545.90/85,719.26
  6. Step 6: Final answer
    x = 39,835.22

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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.