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Finding the Fourth Proportional to 85,231.40, 127,866.30 and 26,069.80

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Solution

The fourth proportional to 85,231.40, 127,866.30 and 26,069.80 is: 39,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,231.40 : 127,866.30 = 26,069.80 : x
  2. Step 2: Convert to fraction form
    85,231.40/127,866.30 = 26,069.80/x
  3. Step 3: Cross multiply
    85,231.40x = 127,866.30 × 26,069.80
  4. Step 4: Simplify right side
    85,231.40x = 3,333,448,867.74
  5. Step 5: Solve for x
    x = 3,333,448,867.74/85,231.40
  6. Step 6: Final answer
    x = 39,110.57

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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.