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Finding the Fourth Proportional to 70,363.11, 105,556.41 and 25,989.96

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Solution

The fourth proportional to 70,363.11, 105,556.41 and 25,989.96 is: 38,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,363.11 : 105,556.41 = 25,989.96 : x
  2. Step 2: Convert to fraction form
    70,363.11/105,556.41 = 25,989.96/x
  3. Step 3: Cross multiply
    70,363.11x = 105,556.41 × 25,989.96
  4. Step 4: Simplify right side
    70,363.11x = 2,743,406,873.64
  5. Step 5: Solve for x
    x = 2,743,406,873.64/70,363.11
  6. Step 6: Final answer
    x = 38,989.28

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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.