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Finding the Fourth Proportional to 70,837.80, 106,314.30 and 68,533.80

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Solution

The fourth proportional to 70,837.80, 106,314.30 and 68,533.80 is: 102,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,837.80 : 106,314.30 = 68,533.80 : x
  2. Step 2: Convert to fraction form
    70,837.80/106,314.30 = 68,533.80/x
  3. Step 3: Cross multiply
    70,837.80x = 106,314.30 × 68,533.80
  4. Step 4: Simplify right side
    70,837.80x = 7,286,122,973.34
  5. Step 5: Solve for x
    x = 7,286,122,973.34/70,837.80
  6. Step 6: Final answer
    x = 102,856.43

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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.