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Finding the Fourth Proportional to 65,679, 98,532.33 and 21,302.29

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Solution

The fourth proportional to 65,679, 98,532.33 and 21,302.29 is: 31,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,679 : 98,532.33 = 21,302.29 : x
  2. Step 2: Convert to fraction form
    65,679/98,532.33 = 21,302.29/x
  3. Step 3: Cross multiply
    65,679x = 98,532.33 × 21,302.29
  4. Step 4: Simplify right side
    65,679x = 2,098,964,268.04
  5. Step 5: Solve for x
    x = 2,098,964,268.04/65,679
  6. Step 6: Final answer
    x = 31,957.92

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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.