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Finding the Fourth Proportional to 84,980.85, 127,474.16 and 25,816.34

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Solution

The fourth proportional to 84,980.85, 127,474.16 and 25,816.34 is: 38,725.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,980.85 : 127,474.16 = 25,816.34 : x
  2. Step 2: Convert to fraction form
    84,980.85/127,474.16 = 25,816.34/x
  3. Step 3: Cross multiply
    84,980.85x = 127,474.16 × 25,816.34
  4. Step 4: Simplify right side
    84,980.85x = 3,290,915,489.32
  5. Step 5: Solve for x
    x = 3,290,915,489.32/84,980.85
  6. Step 6: Final answer
    x = 38,725.38

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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.