Home / 85,283.03-127,879.31-26,102.81

Finding the Fourth Proportional to 85,283.03, 127,879.31 and 26,102.81

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Solution

The fourth proportional to 85,283.03, 127,879.31 and 26,102.81 is: 39,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,283.03 : 127,879.31 = 26,102.81 : x
  2. Step 2: Convert to fraction form
    85,283.03/127,879.31 = 26,102.81/x
  3. Step 3: Cross multiply
    85,283.03x = 127,879.31 × 26,102.81
  4. Step 4: Simplify right side
    85,283.03x = 3,338,009,716.82
  5. Step 5: Solve for x
    x = 3,338,009,716.82/85,283.03
  6. Step 6: Final answer
    x = 39,140.37

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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.