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Finding the Fourth Proportional to 68,878.12, 103,334.34 and 19,630.12

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Solution

The fourth proportional to 68,878.12, 103,334.34 and 19,630.12 is: 29,450.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,878.12 : 103,334.34 = 19,630.12 : x
  2. Step 2: Convert to fraction form
    68,878.12/103,334.34 = 19,630.12/x
  3. Step 3: Cross multiply
    68,878.12x = 103,334.34 × 19,630.12
  4. Step 4: Simplify right side
    68,878.12x = 2,028,465,494.32
  5. Step 5: Solve for x
    x = 2,028,465,494.32/68,878.12
  6. Step 6: Final answer
    x = 29,450.07

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1.5x scale

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.