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Finding the Fourth Proportional to 43,969.76, 65,973.09 and 18,996.95

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Solution

The fourth proportional to 43,969.76, 65,973.09 and 18,996.95 is: 28,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,969.76 : 65,973.09 = 18,996.95 : x
  2. Step 2: Convert to fraction form
    43,969.76/65,973.09 = 18,996.95/x
  3. Step 3: Cross multiply
    43,969.76x = 65,973.09 × 18,996.95
  4. Step 4: Simplify right side
    43,969.76x = 1,253,287,492.08
  5. Step 5: Solve for x
    x = 1,253,287,492.08/43,969.76
  6. Step 6: Final answer
    x = 28,503.40

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Why These Related Problems?

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