Home / 43,711.40-65,567.10-18,747.20

Finding the Fourth Proportional to 43,711.40, 65,567.10 and 18,747.20

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Solution

The fourth proportional to 43,711.40, 65,567.10 and 18,747.20 is: 28,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,711.40 : 65,567.10 = 18,747.20 : x
  2. Step 2: Convert to fraction form
    43,711.40/65,567.10 = 18,747.20/x
  3. Step 3: Cross multiply
    43,711.40x = 65,567.10 × 18,747.20
  4. Step 4: Simplify right side
    43,711.40x = 1,229,199,537.12
  5. Step 5: Solve for x
    x = 1,229,199,537.12/43,711.40
  6. Step 6: Final answer
    x = 28,120.80

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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.