Home / 82,170.90-123,027.39-52,515.54

Finding the Fourth Proportional to 82,170.90, 123,027.39 and 52,515.54

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Solution

The fourth proportional to 82,170.90, 123,027.39 and 52,515.54 is: 78,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,170.90 : 123,027.39 = 52,515.54 : x
  2. Step 2: Convert to fraction form
    82,170.90/123,027.39 = 52,515.54/x
  3. Step 3: Cross multiply
    82,170.90x = 123,027.39 × 52,515.54
  4. Step 4: Simplify right side
    82,170.90x = 6,460,849,820.64
  5. Step 5: Solve for x
    x = 6,460,849,820.64/82,170.90
  6. Step 6: Final answer
    x = 78,626.98

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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.