Home / 56,209.35-84,304.31-21,149.31

Finding the Fourth Proportional to 56,209.35, 84,304.31 and 21,149.31

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Solution

The fourth proportional to 56,209.35, 84,304.31 and 21,149.31 is: 31,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,209.35 : 84,304.31 = 21,149.31 : x
  2. Step 2: Convert to fraction form
    56,209.35/84,304.31 = 21,149.31/x
  3. Step 3: Cross multiply
    56,209.35x = 84,304.31 × 21,149.31
  4. Step 4: Simplify right side
    56,209.35x = 1,782,977,880.78
  5. Step 5: Solve for x
    x = 1,782,977,880.78/56,209.35
  6. Step 6: Final answer
    x = 31,720.31

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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.