Home / 105,557.82-145,664.40-57,801.96

Finding the Fourth Proportional to 105,557.82, 145,664.40 and 57,801.96

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Solution

The fourth proportional to 105,557.82, 145,664.40 and 57,801.96 is: 79,763.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,557.82 : 145,664.40 = 57,801.96 : x
  2. Step 2: Convert to fraction form
    105,557.82/145,664.40 = 57,801.96/x
  3. Step 3: Cross multiply
    105,557.82x = 145,664.40 × 57,801.96
  4. Step 4: Simplify right side
    105,557.82x = 8,419,687,822.22
  5. Step 5: Solve for x
    x = 8,419,687,822.22/105,557.82
  6. Step 6: Final answer
    x = 79,763.75

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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.