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Finding the Fourth Proportional to 70,968.51, 106,447.64 and 18,376.29

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Solution

The fourth proportional to 70,968.51, 106,447.64 and 18,376.29 is: 27,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,968.51 : 106,447.64 = 18,376.29 : x
  2. Step 2: Convert to fraction form
    70,968.51/106,447.64 = 18,376.29/x
  3. Step 3: Cross multiply
    70,968.51x = 106,447.64 × 18,376.29
  4. Step 4: Simplify right side
    70,968.51x = 1,956,112,610.57
  5. Step 5: Solve for x
    x = 1,956,112,610.57/70,968.51
  6. Step 6: Final answer
    x = 27,563.11

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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.