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Finding the Fourth Proportional to 68,909.50, 103,388.82 and 33,873.76

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Solution

The fourth proportional to 68,909.50, 103,388.82 and 33,873.76 is: 50,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.50 : 103,388.82 = 33,873.76 : x
  2. Step 2: Convert to fraction form
    68,909.50/103,388.82 = 33,873.76/x
  3. Step 3: Cross multiply
    68,909.50x = 103,388.82 × 33,873.76
  4. Step 4: Simplify right side
    68,909.50x = 3,502,168,075.36
  5. Step 5: Solve for x
    x = 3,502,168,075.36/68,909.50
  6. Step 6: Final answer
    x = 50,822.72

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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.