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Finding the Fourth Proportional to 85,122.89, 127,683.99 and 25,958.39

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Solution

The fourth proportional to 85,122.89, 127,683.99 and 25,958.39 is: 38,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,122.89 : 127,683.99 = 25,958.39 : x
  2. Step 2: Convert to fraction form
    85,122.89/127,683.99 = 25,958.39/x
  3. Step 3: Cross multiply
    85,122.89x = 127,683.99 × 25,958.39
  4. Step 4: Simplify right side
    85,122.89x = 3,314,470,097.75
  5. Step 5: Solve for x
    x = 3,314,470,097.75/85,122.89
  6. Step 6: Final answer
    x = 38,937.47

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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.