Home / 43,631.40-65,447.10-40,423.80

Finding the Fourth Proportional to 43,631.40, 65,447.10 and 40,423.80

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Solution

The fourth proportional to 43,631.40, 65,447.10 and 40,423.80 is: 60,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,631.40 : 65,447.10 = 40,423.80 : x
  2. Step 2: Convert to fraction form
    43,631.40/65,447.10 = 40,423.80/x
  3. Step 3: Cross multiply
    43,631.40x = 65,447.10 × 40,423.80
  4. Step 4: Simplify right side
    43,631.40x = 2,645,620,480.98
  5. Step 5: Solve for x
    x = 2,645,620,480.98/43,631.40
  6. Step 6: Final answer
    x = 60,635.70

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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.