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Finding the Fourth Proportional to 55,805.58, 83,720.49 and 18,369.45

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Solution

The fourth proportional to 55,805.58, 83,720.49 and 18,369.45 is: 27,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,805.58 : 83,720.49 = 18,369.45 : x
  2. Step 2: Convert to fraction form
    55,805.58/83,720.49 = 18,369.45/x
  3. Step 3: Cross multiply
    55,805.58x = 83,720.49 × 18,369.45
  4. Step 4: Simplify right side
    55,805.58x = 1,537,899,737.87
  5. Step 5: Solve for x
    x = 1,537,899,737.87/55,805.58
  6. Step 6: Final answer
    x = 27,558.17

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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.