Home / 43,031.09-64,500.48-20,813.90

Finding the Fourth Proportional to 43,031.09, 64,500.48 and 20,813.90

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Solution

The fourth proportional to 43,031.09, 64,500.48 and 20,813.90 is: 31,198.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,031.09 : 64,500.48 = 20,813.90 : x
  2. Step 2: Convert to fraction form
    43,031.09/64,500.48 = 20,813.90/x
  3. Step 3: Cross multiply
    43,031.09x = 64,500.48 × 20,813.90
  4. Step 4: Simplify right side
    43,031.09x = 1,342,506,540.67
  5. Step 5: Solve for x
    x = 1,342,506,540.67/43,031.09
  6. Step 6: Final answer
    x = 31,198.53

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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.