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Finding the Fourth Proportional to 43,808.63, 65,700.84 and 18,843.35

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Solution

The fourth proportional to 43,808.63, 65,700.84 and 18,843.35 is: 28,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,808.63 : 65,700.84 = 18,843.35 : x
  2. Step 2: Convert to fraction form
    43,808.63/65,700.84 = 18,843.35/x
  3. Step 3: Cross multiply
    43,808.63x = 65,700.84 × 18,843.35
  4. Step 4: Simplify right side
    43,808.63x = 1,238,023,923.41
  5. Step 5: Solve for x
    x = 1,238,023,923.41/43,808.63
  6. Step 6: Final answer
    x = 28,259.82

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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.