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Finding the Fourth Proportional to 43,779.80, 65,718.30 and 27,158.60

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Solution

The fourth proportional to 43,779.80, 65,718.30 and 27,158.60 is: 40,768.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,779.80 : 65,718.30 = 27,158.60 : x
  2. Step 2: Convert to fraction form
    43,779.80/65,718.30 = 27,158.60/x
  3. Step 3: Cross multiply
    43,779.80x = 65,718.30 × 27,158.60
  4. Step 4: Simplify right side
    43,779.80x = 1,784,817,022.38
  5. Step 5: Solve for x
    x = 1,784,817,022.38/43,779.80
  6. Step 6: Final answer
    x = 40,768.05

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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.