Home / 43,521.40-65,421.30-40,439.80

Finding the Fourth Proportional to 43,521.40, 65,421.30 and 40,439.80

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Solution

The fourth proportional to 43,521.40, 65,421.30 and 40,439.80 is: 60,789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,521.40 : 65,421.30 = 40,439.80 : x
  2. Step 2: Convert to fraction form
    43,521.40/65,421.30 = 40,439.80/x
  3. Step 3: Cross multiply
    43,521.40x = 65,421.30 × 40,439.80
  4. Step 4: Simplify right side
    43,521.40x = 2,645,624,287.74
  5. Step 5: Solve for x
    x = 2,645,624,287.74/43,521.40
  6. Step 6: Final answer
    x = 60,789.04

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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.