Home / 85,197.26-127,751.38-31,845.40

Finding the Fourth Proportional to 85,197.26, 127,751.38 and 31,845.40

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Solution

The fourth proportional to 85,197.26, 127,751.38 and 31,845.40 is: 47,751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,197.26 : 127,751.38 = 31,845.40 : x
  2. Step 2: Convert to fraction form
    85,197.26/127,751.38 = 31,845.40/x
  3. Step 3: Cross multiply
    85,197.26x = 127,751.38 × 31,845.40
  4. Step 4: Simplify right side
    85,197.26x = 4,068,293,796.65
  5. Step 5: Solve for x
    x = 4,068,293,796.65/85,197.26
  6. Step 6: Final answer
    x = 47,751.46

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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.