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Finding the Fourth Proportional to 84,804.21, 127,206.33 and 28,644.48

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Solution

The fourth proportional to 84,804.21, 127,206.33 and 28,644.48 is: 42,966.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,804.21 : 127,206.33 = 28,644.48 : x
  2. Step 2: Convert to fraction form
    84,804.21/127,206.33 = 28,644.48/x
  3. Step 3: Cross multiply
    84,804.21x = 127,206.33 × 28,644.48
  4. Step 4: Simplify right side
    84,804.21x = 3,643,759,175.56
  5. Step 5: Solve for x
    x = 3,643,759,175.56/84,804.21
  6. Step 6: Final answer
    x = 42,966.73

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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.