Home / 43,271.80-64,918.50-12,106.78

Finding the Fourth Proportional to 43,271.80, 64,918.50 and 12,106.78

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Solution

The fourth proportional to 43,271.80, 64,918.50 and 12,106.78 is: 18,163.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,271.80 : 64,918.50 = 12,106.78 : x
  2. Step 2: Convert to fraction form
    43,271.80/64,918.50 = 12,106.78/x
  3. Step 3: Cross multiply
    43,271.80x = 64,918.50 × 12,106.78
  4. Step 4: Simplify right side
    43,271.80x = 785,953,997.43
  5. Step 5: Solve for x
    x = 785,953,997.43/43,271.80
  6. Step 6: Final answer
    x = 18,163.19

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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.