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Finding the Fourth Proportional to 84,751.26, 127,127.65 and 21,571.45

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Solution

The fourth proportional to 84,751.26, 127,127.65 and 21,571.45 is: 32,357.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,751.26 : 127,127.65 = 21,571.45 : x
  2. Step 2: Convert to fraction form
    84,751.26/127,127.65 = 21,571.45/x
  3. Step 3: Cross multiply
    84,751.26x = 127,127.65 × 21,571.45
  4. Step 4: Simplify right side
    84,751.26x = 2,742,327,745.59
  5. Step 5: Solve for x
    x = 2,742,327,745.59/84,751.26
  6. Step 6: Final answer
    x = 32,357.37

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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.