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Finding the Fourth Proportional to 40,428.81, 60,662.05 and 15,460.64

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Solution

The fourth proportional to 40,428.81, 60,662.05 and 15,460.64 is: 23,198.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,428.81 : 60,662.05 = 15,460.64 : x
  2. Step 2: Convert to fraction form
    40,428.81/60,662.05 = 15,460.64/x
  3. Step 3: Cross multiply
    40,428.81x = 60,662.05 × 15,460.64
  4. Step 4: Simplify right side
    40,428.81x = 937,873,774.75
  5. Step 5: Solve for x
    x = 937,873,774.75/40,428.81
  6. Step 6: Final answer
    x = 23,198.15

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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.