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Finding the Fourth Proportional to 75,618, 104,352.90 and 43,788.60

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Solution

The fourth proportional to 75,618, 104,352.90 and 43,788.60 is: 60,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,618 : 104,352.90 = 43,788.60 : x
  2. Step 2: Convert to fraction form
    75,618/104,352.90 = 43,788.60/x
  3. Step 3: Cross multiply
    75,618x = 104,352.90 × 43,788.60
  4. Step 4: Simplify right side
    75,618x = 4,569,467,396.94
  5. Step 5: Solve for x
    x = 4,569,467,396.94/75,618
  6. Step 6: Final answer
    x = 60,428.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.