Home / 85,450.51-128,175.36-47,481.89

Finding the Fourth Proportional to 85,450.51, 128,175.36 and 47,481.89

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Solution

The fourth proportional to 85,450.51, 128,175.36 and 47,481.89 is: 71,222.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.51 : 128,175.36 = 47,481.89 : x
  2. Step 2: Convert to fraction form
    85,450.51/128,175.36 = 47,481.89/x
  3. Step 3: Cross multiply
    85,450.51x = 128,175.36 × 47,481.89
  4. Step 4: Simplify right side
    85,450.51x = 6,086,008,344.23
  5. Step 5: Solve for x
    x = 6,086,008,344.23/85,450.51
  6. Step 6: Final answer
    x = 71,222.61

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1.5x scale

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.