Home / 85,171.40-127,776.30-26,009.80

Finding the Fourth Proportional to 85,171.40, 127,776.30 and 26,009.80

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Solution

The fourth proportional to 85,171.40, 127,776.30 and 26,009.80 is: 39,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,171.40 : 127,776.30 = 26,009.80 : x
  2. Step 2: Convert to fraction form
    85,171.40/127,776.30 = 26,009.80/x
  3. Step 3: Cross multiply
    85,171.40x = 127,776.30 × 26,009.80
  4. Step 4: Simplify right side
    85,171.40x = 3,323,436,007.74
  5. Step 5: Solve for x
    x = 3,323,436,007.74/85,171.40
  6. Step 6: Final answer
    x = 39,020.56

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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.