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Finding the Fourth Proportional to 84,912.96, 127,361.62 and 28,746.66

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Solution

The fourth proportional to 84,912.96, 127,361.62 and 28,746.66 is: 43,117.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912.96 : 127,361.62 = 28,746.66 : x
  2. Step 2: Convert to fraction form
    84,912.96/127,361.62 = 28,746.66/x
  3. Step 3: Cross multiply
    84,912.96x = 127,361.62 × 28,746.66
  4. Step 4: Simplify right side
    84,912.96x = 3,661,221,187.19
  5. Step 5: Solve for x
    x = 3,661,221,187.19/84,912.96
  6. Step 6: Final answer
    x = 43,117.34

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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.