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Finding the Fourth Proportional to 55,991.25, 83,988.51 and 14,438.25

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Solution

The fourth proportional to 55,991.25, 83,988.51 and 14,438.25 is: 21,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,991.25 : 83,988.51 = 14,438.25 : x
  2. Step 2: Convert to fraction form
    55,991.25/83,988.51 = 14,438.25/x
  3. Step 3: Cross multiply
    55,991.25x = 83,988.51 × 14,438.25
  4. Step 4: Simplify right side
    55,991.25x = 1,212,647,104.51
  5. Step 5: Solve for x
    x = 1,212,647,104.51/55,991.25
  6. Step 6: Final answer
    x = 21,657.80

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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.