Home / 85,091.25-127,621.83-31,771.26

Finding the Fourth Proportional to 85,091.25, 127,621.83 and 31,771.26

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Solution

The fourth proportional to 85,091.25, 127,621.83 and 31,771.26 is: 47,651.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,091.25 : 127,621.83 = 31,771.26 : x
  2. Step 2: Convert to fraction form
    85,091.25/127,621.83 = 31,771.26/x
  3. Step 3: Cross multiply
    85,091.25x = 127,621.83 × 31,771.26
  4. Step 4: Simplify right side
    85,091.25x = 4,054,706,342.61
  5. Step 5: Solve for x
    x = 4,054,706,342.61/85,091.25
  6. Step 6: Final answer
    x = 47,651.27

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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.