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Finding the Fourth Proportional to 65,372.65, 98,048.72 and 17,991.29

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Solution

The fourth proportional to 65,372.65, 98,048.72 and 17,991.29 is: 26,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,372.65 : 98,048.72 = 17,991.29 : x
  2. Step 2: Convert to fraction form
    65,372.65/98,048.72 = 17,991.29/x
  3. Step 3: Cross multiply
    65,372.65x = 98,048.72 × 17,991.29
  4. Step 4: Simplify right side
    65,372.65x = 1,764,022,955.65
  5. Step 5: Solve for x
    x = 1,764,022,955.65/65,372.65
  6. Step 6: Final answer
    x = 26,984.11

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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.