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Finding the Fourth Proportional to 43,357.76, 65,051.16 and 18,396.80

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Solution

The fourth proportional to 43,357.76, 65,051.16 and 18,396.80 is: 27,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,357.76 : 65,051.16 = 18,396.80 : x
  2. Step 2: Convert to fraction form
    43,357.76/65,051.16 = 18,396.80/x
  3. Step 3: Cross multiply
    43,357.76x = 65,051.16 × 18,396.80
  4. Step 4: Simplify right side
    43,357.76x = 1,196,733,180.29
  5. Step 5: Solve for x
    x = 1,196,733,180.29/43,357.76
  6. Step 6: Final answer
    x = 27,601.36

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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.