Home / 90,982.08-136,487.97-28,638

Finding the Fourth Proportional to 90,982.08, 136,487.97 and 28,638

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Solution

The fourth proportional to 90,982.08, 136,487.97 and 28,638 is: 42,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,982.08 : 136,487.97 = 28,638 : x
  2. Step 2: Convert to fraction form
    90,982.08/136,487.97 = 28,638/x
  3. Step 3: Cross multiply
    90,982.08x = 136,487.97 × 28,638
  4. Step 4: Simplify right side
    90,982.08x = 3,908,742,484.86
  5. Step 5: Solve for x
    x = 3,908,742,484.86/90,982.08
  6. Step 6: Final answer
    x = 42,961.67

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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.