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Finding the Fourth Proportional to 43,811.80, 65,631.30 and 40,701.40

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Solution

The fourth proportional to 43,811.80, 65,631.30 and 40,701.40 is: 60,971.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,811.80 : 65,631.30 = 40,701.40 : x
  2. Step 2: Convert to fraction form
    43,811.80/65,631.30 = 40,701.40/x
  3. Step 3: Cross multiply
    43,811.80x = 65,631.30 × 40,701.40
  4. Step 4: Simplify right side
    43,811.80x = 2,671,285,793.82
  5. Step 5: Solve for x
    x = 2,671,285,793.82/43,811.80
  6. Step 6: Final answer
    x = 60,971.83

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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.