Home / 43,308-64,964.46-12,145.68

Finding the Fourth Proportional to 43,308, 64,964.46 and 12,145.68

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Solution

The fourth proportional to 43,308, 64,964.46 and 12,145.68 is: 18,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,308 : 64,964.46 = 12,145.68 : x
  2. Step 2: Convert to fraction form
    43,308/64,964.46 = 12,145.68/x
  3. Step 3: Cross multiply
    43,308x = 64,964.46 × 12,145.68
  4. Step 4: Simplify right side
    43,308x = 789,037,588.08
  5. Step 5: Solve for x
    x = 789,037,588.08/43,308
  6. Step 6: Final answer
    x = 18,219.21

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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.