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Finding the Fourth Proportional to 30,372.90, 41,940.95 and 19,061.99

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Solution

The fourth proportional to 30,372.90, 41,940.95 and 19,061.99 is: 26,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.90 : 41,940.95 = 19,061.99 : x
  2. Step 2: Convert to fraction form
    30,372.90/41,940.95 = 19,061.99/x
  3. Step 3: Cross multiply
    30,372.90x = 41,940.95 × 19,061.99
  4. Step 4: Simplify right side
    30,372.90x = 799,477,969.49
  5. Step 5: Solve for x
    x = 799,477,969.49/30,372.90
  6. Step 6: Final answer
    x = 26,322.08

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