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Finding the Fourth Proportional to 55,560, 83,348.68 and 18,111.38

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Solution

The fourth proportional to 55,560, 83,348.68 and 18,111.38 is: 27,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,560 : 83,348.68 = 18,111.38 : x
  2. Step 2: Convert to fraction form
    55,560/83,348.68 = 18,111.38/x
  3. Step 3: Cross multiply
    55,560x = 83,348.68 × 18,111.38
  4. Step 4: Simplify right side
    55,560x = 1,509,559,615.98
  5. Step 5: Solve for x
    x = 1,509,559,615.98/55,560
  6. Step 6: Final answer
    x = 27,169.90

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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.