Home / 43,491.42-65,216.07-21,278.79

Finding the Fourth Proportional to 43,491.42, 65,216.07 and 21,278.79

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Solution

The fourth proportional to 43,491.42, 65,216.07 and 21,278.79 is: 31,907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,491.42 : 65,216.07 = 21,278.79 : x
  2. Step 2: Convert to fraction form
    43,491.42/65,216.07 = 21,278.79/x
  3. Step 3: Cross multiply
    43,491.42x = 65,216.07 × 21,278.79
  4. Step 4: Simplify right side
    43,491.42x = 1,387,719,058.16
  5. Step 5: Solve for x
    x = 1,387,719,058.16/43,491.42
  6. Step 6: Final answer
    x = 31,907.88

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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.