Home / 90,556.36-135,828.06-28,225

Finding the Fourth Proportional to 90,556.36, 135,828.06 and 28,225

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Solution

The fourth proportional to 90,556.36, 135,828.06 and 28,225 is: 42,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,556.36 : 135,828.06 = 28,225 : x
  2. Step 2: Convert to fraction form
    90,556.36/135,828.06 = 28,225/x
  3. Step 3: Cross multiply
    90,556.36x = 135,828.06 × 28,225
  4. Step 4: Simplify right side
    90,556.36x = 3,833,746,993.50
  5. Step 5: Solve for x
    x = 3,833,746,993.50/90,556.36
  6. Step 6: Final answer
    x = 42,335.48

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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.