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Finding the Fourth Proportional to 85,121.84, 127,703.44 and 25,958.56

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Solution

The fourth proportional to 85,121.84, 127,703.44 and 25,958.56 is: 38,944.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,121.84 : 127,703.44 = 25,958.56 : x
  2. Step 2: Convert to fraction form
    85,121.84/127,703.44 = 25,958.56/x
  3. Step 3: Cross multiply
    85,121.84x = 127,703.44 × 25,958.56
  4. Step 4: Simplify right side
    85,121.84x = 3,314,997,409.45
  5. Step 5: Solve for x
    x = 3,314,997,409.45/85,121.84
  6. Step 6: Final answer
    x = 38,944.15

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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.