Home / 43,485.42-65,207.07-21,272.79

Finding the Fourth Proportional to 43,485.42, 65,207.07 and 21,272.79

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Solution

The fourth proportional to 43,485.42, 65,207.07 and 21,272.79 is: 31,898.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,485.42 : 65,207.07 = 21,272.79 : x
  2. Step 2: Convert to fraction form
    43,485.42/65,207.07 = 21,272.79/x
  3. Step 3: Cross multiply
    43,485.42x = 65,207.07 × 21,272.79
  4. Step 4: Simplify right side
    43,485.42x = 1,387,136,306.63
  5. Step 5: Solve for x
    x = 1,387,136,306.63/43,485.42
  6. Step 6: Final answer
    x = 31,898.88

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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.