Home / 65,972.43-98,970.80-21,601.64

Finding the Fourth Proportional to 65,972.43, 98,970.80 and 21,601.64

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Solution

The fourth proportional to 65,972.43, 98,970.80 and 21,601.64 is: 32,406.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,972.43 : 98,970.80 = 21,601.64 : x
  2. Step 2: Convert to fraction form
    65,972.43/98,970.80 = 21,601.64/x
  3. Step 3: Cross multiply
    65,972.43x = 98,970.80 × 21,601.64
  4. Step 4: Simplify right side
    65,972.43x = 2,137,930,989.25
  5. Step 5: Solve for x
    x = 2,137,930,989.25/65,972.43
  6. Step 6: Final answer
    x = 32,406.43

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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.