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Finding the Fourth Proportional to 43,660.80, 65,458.80 and 14,061.60

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Solution

The fourth proportional to 43,660.80, 65,458.80 and 14,061.60 is: 21,081.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,660.80 : 65,458.80 = 14,061.60 : x
  2. Step 2: Convert to fraction form
    43,660.80/65,458.80 = 14,061.60/x
  3. Step 3: Cross multiply
    43,660.80x = 65,458.80 × 14,061.60
  4. Step 4: Simplify right side
    43,660.80x = 920,455,462.08
  5. Step 5: Solve for x
    x = 920,455,462.08/43,660.80
  6. Step 6: Final answer
    x = 21,081.97

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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.