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Finding the Fourth Proportional to 70,389.42, 105,583.24 and 17,081.84

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Solution

The fourth proportional to 70,389.42, 105,583.24 and 17,081.84 is: 25,622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,389.42 : 105,583.24 = 17,081.84 : x
  2. Step 2: Convert to fraction form
    70,389.42/105,583.24 = 17,081.84/x
  3. Step 3: Cross multiply
    70,389.42x = 105,583.24 × 17,081.84
  4. Step 4: Simplify right side
    70,389.42x = 1,803,556,012.36
  5. Step 5: Solve for x
    x = 1,803,556,012.36/70,389.42
  6. Step 6: Final answer
    x = 25,622.54

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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.