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Finding the Fourth Proportional to 70,365.26, 105,539.18 and 25,991.03

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Solution

The fourth proportional to 70,365.26, 105,539.18 and 25,991.03 is: 38,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,365.26 : 105,539.18 = 25,991.03 : x
  2. Step 2: Convert to fraction form
    70,365.26/105,539.18 = 25,991.03/x
  3. Step 3: Cross multiply
    70,365.26x = 105,539.18 × 25,991.03
  4. Step 4: Simplify right side
    70,365.26x = 2,743,071,335.90
  5. Step 5: Solve for x
    x = 2,743,071,335.90/70,365.26
  6. Step 6: Final answer
    x = 38,983.32

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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.