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Finding the Fourth Proportional to 68,578.60, 94,647.18 and 38,365.60

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Solution

The fourth proportional to 68,578.60, 94,647.18 and 38,365.60 is: 52,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,578.60 : 94,647.18 = 38,365.60 : x
  2. Step 2: Convert to fraction form
    68,578.60/94,647.18 = 38,365.60/x
  3. Step 3: Cross multiply
    68,578.60x = 94,647.18 × 38,365.60
  4. Step 4: Simplify right side
    68,578.60x = 3,631,195,849.01
  5. Step 5: Solve for x
    x = 3,631,195,849.01/68,578.60
  6. Step 6: Final answer
    x = 52,949.40

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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.