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Finding the Fourth Proportional to 43,149.76, 64,749.80 and 18,188.28

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Solution

The fourth proportional to 43,149.76, 64,749.80 and 18,188.28 is: 27,293.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,149.76 : 64,749.80 = 18,188.28 : x
  2. Step 2: Convert to fraction form
    43,149.76/64,749.80 = 18,188.28/x
  3. Step 3: Cross multiply
    43,149.76x = 64,749.80 × 18,188.28
  4. Step 4: Simplify right side
    43,149.76x = 1,177,687,492.34
  5. Step 5: Solve for x
    x = 1,177,687,492.34/43,149.76
  6. Step 6: Final answer
    x = 27,293.03

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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.