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Finding the Fourth Proportional to 55,989.76, 83,986.24 and 14,436.76

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Solution

The fourth proportional to 55,989.76, 83,986.24 and 14,436.76 is: 21,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,989.76 : 83,986.24 = 14,436.76 : x
  2. Step 2: Convert to fraction form
    55,989.76/83,986.24 = 14,436.76/x
  3. Step 3: Cross multiply
    55,989.76x = 83,986.24 × 14,436.76
  4. Step 4: Simplify right side
    55,989.76x = 1,212,489,190.18
  5. Step 5: Solve for x
    x = 1,212,489,190.18/55,989.76
  6. Step 6: Final answer
    x = 21,655.55

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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.