Home / 43,278.10-64,868.55-18,313.90

Finding the Fourth Proportional to 43,278.10, 64,868.55 and 18,313.90

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Solution

The fourth proportional to 43,278.10, 64,868.55 and 18,313.90 is: 27,450.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.10 : 64,868.55 = 18,313.90 : x
  2. Step 2: Convert to fraction form
    43,278.10/64,868.55 = 18,313.90/x
  3. Step 3: Cross multiply
    43,278.10x = 64,868.55 × 18,313.90
  4. Step 4: Simplify right side
    43,278.10x = 1,187,996,137.85
  5. Step 5: Solve for x
    x = 1,187,996,137.85/43,278.10
  6. Step 6: Final answer
    x = 27,450.28

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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.