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Finding the Fourth Proportional to 53,489.25, 73,815.21 and 31,133.25

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Solution

The fourth proportional to 53,489.25, 73,815.21 and 31,133.25 is: 42,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,489.25 : 73,815.21 = 31,133.25 : x
  2. Step 2: Convert to fraction form
    53,489.25/73,815.21 = 31,133.25/x
  3. Step 3: Cross multiply
    53,489.25x = 73,815.21 × 31,133.25
  4. Step 4: Simplify right side
    53,489.25x = 2,298,107,386.73
  5. Step 5: Solve for x
    x = 2,298,107,386.73/53,489.25
  6. Step 6: Final answer
    x = 42,963.91

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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.