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Finding the Fourth Proportional to 65,355.89, 98,024.56 and 20,976.90

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Solution

The fourth proportional to 65,355.89, 98,024.56 and 20,976.90 is: 31,462.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,355.89 : 98,024.56 = 20,976.90 : x
  2. Step 2: Convert to fraction form
    65,355.89/98,024.56 = 20,976.90/x
  3. Step 3: Cross multiply
    65,355.89x = 98,024.56 × 20,976.90
  4. Step 4: Simplify right side
    65,355.89x = 2,056,250,972.63
  5. Step 5: Solve for x
    x = 2,056,250,972.63/65,355.89
  6. Step 6: Final answer
    x = 31,462.37

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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.