Home / 85,211.65-117,600.83-51,231.21

Finding the Fourth Proportional to 85,211.65, 117,600.83 and 51,231.21

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Solution

The fourth proportional to 85,211.65, 117,600.83 and 51,231.21 is: 70,704.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.65 : 117,600.83 = 51,231.21 : x
  2. Step 2: Convert to fraction form
    85,211.65/117,600.83 = 51,231.21/x
  3. Step 3: Cross multiply
    85,211.65x = 117,600.83 × 51,231.21
  4. Step 4: Simplify right side
    85,211.65x = 6,024,832,817.90
  5. Step 5: Solve for x
    x = 6,024,832,817.90/85,211.65
  6. Step 6: Final answer
    x = 70,704.33

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1.5x scale

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.