Home / 43,195.40-64,811-20,694.68

Finding the Fourth Proportional to 43,195.40, 64,811 and 20,694.68

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Solution

The fourth proportional to 43,195.40, 64,811 and 20,694.68 is: 31,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,195.40 : 64,811 = 20,694.68 : x
  2. Step 2: Convert to fraction form
    43,195.40/64,811 = 20,694.68/x
  3. Step 3: Cross multiply
    43,195.40x = 64,811 × 20,694.68
  4. Step 4: Simplify right side
    43,195.40x = 1,341,242,905.48
  5. Step 5: Solve for x
    x = 1,341,242,905.48/43,195.40
  6. Step 6: Final answer
    x = 31,050.60

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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.