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Finding the Fourth Proportional to 65,773.77, 98,660.66 and 21,405.03

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Solution

The fourth proportional to 65,773.77, 98,660.66 and 21,405.03 is: 32,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,773.77 : 98,660.66 = 21,405.03 : x
  2. Step 2: Convert to fraction form
    65,773.77/98,660.66 = 21,405.03/x
  3. Step 3: Cross multiply
    65,773.77x = 98,660.66 × 21,405.03
  4. Step 4: Simplify right side
    65,773.77x = 2,111,834,280.09
  5. Step 5: Solve for x
    x = 2,111,834,280.09/65,773.77
  6. Step 6: Final answer
    x = 32,107.55

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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.