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Finding the Fourth Proportional to 65,648.36, 98,487.99 and 21,274.94

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Solution

The fourth proportional to 65,648.36, 98,487.99 and 21,274.94 is: 31,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,648.36 : 98,487.99 = 21,274.94 : x
  2. Step 2: Convert to fraction form
    65,648.36/98,487.99 = 21,274.94/x
  3. Step 3: Cross multiply
    65,648.36x = 98,487.99 × 21,274.94
  4. Step 4: Simplify right side
    65,648.36x = 2,095,325,585.53
  5. Step 5: Solve for x
    x = 2,095,325,585.53/65,648.36
  6. Step 6: Final answer
    x = 31,917.41

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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.