Home / 31,629.78-47,655.48-28,631.43

Finding the Fourth Proportional to 31,629.78, 47,655.48 and 28,631.43

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Solution

The fourth proportional to 31,629.78, 47,655.48 and 28,631.43 is: 43,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.78 : 47,655.48 = 28,631.43 : x
  2. Step 2: Convert to fraction form
    31,629.78/47,655.48 = 28,631.43/x
  3. Step 3: Cross multiply
    31,629.78x = 47,655.48 × 28,631.43
  4. Step 4: Simplify right side
    31,629.78x = 1,364,444,539.74
  5. Step 5: Solve for x
    x = 1,364,444,539.74/31,629.78
  6. Step 6: Final answer
    x = 43,137.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.