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Finding the Fourth Proportional to 85,015.88, 127,523.91 and 31,707.04

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Solution

The fourth proportional to 85,015.88, 127,523.91 and 31,707.04 is: 47,560.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,015.88 : 127,523.91 = 31,707.04 : x
  2. Step 2: Convert to fraction form
    85,015.88/127,523.91 = 31,707.04/x
  3. Step 3: Cross multiply
    85,015.88x = 127,523.91 × 31,707.04
  4. Step 4: Simplify right side
    85,015.88x = 4,043,405,715.33
  5. Step 5: Solve for x
    x = 4,043,405,715.33/85,015.88
  6. Step 6: Final answer
    x = 47,560.59

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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.