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Finding the Fourth Proportional to 65,995.12, 98,993.04 and 21,623.68

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Solution

The fourth proportional to 65,995.12, 98,993.04 and 21,623.68 is: 32,435.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,995.12 : 98,993.04 = 21,623.68 : x
  2. Step 2: Convert to fraction form
    65,995.12/98,993.04 = 21,623.68/x
  3. Step 3: Cross multiply
    65,995.12x = 98,993.04 × 21,623.68
  4. Step 4: Simplify right side
    65,995.12x = 2,140,593,819.19
  5. Step 5: Solve for x
    x = 2,140,593,819.19/65,995.12
  6. Step 6: Final answer
    x = 32,435.64

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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.