Home / 49,579.12-68,399.40-31,669.48

Finding the Fourth Proportional to 49,579.12, 68,399.40 and 31,669.48

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Solution

The fourth proportional to 49,579.12, 68,399.40 and 31,669.48 is: 43,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,579.12 : 68,399.40 = 31,669.48 : x
  2. Step 2: Convert to fraction form
    49,579.12/68,399.40 = 31,669.48/x
  3. Step 3: Cross multiply
    49,579.12x = 68,399.40 × 31,669.48
  4. Step 4: Simplify right side
    49,579.12x = 2,166,173,430.31
  5. Step 5: Solve for x
    x = 2,166,173,430.31/49,579.12
  6. Step 6: Final answer
    x = 43,691.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.