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Finding the Fourth Proportional to 68,871.87, 103,307.74 and 18,952.25

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Solution

The fourth proportional to 68,871.87, 103,307.74 and 18,952.25 is: 28,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,871.87 : 103,307.74 = 18,952.25 : x
  2. Step 2: Convert to fraction form
    68,871.87/103,307.74 = 18,952.25/x
  3. Step 3: Cross multiply
    68,871.87x = 103,307.74 × 18,952.25
  4. Step 4: Simplify right side
    68,871.87x = 1,957,913,551.50
  5. Step 5: Solve for x
    x = 1,957,913,551.50/68,871.87
  6. Step 6: Final answer
    x = 28,428.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.