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Finding the Fourth Proportional to 55,515.10, 77,896.10 and 55,515.10

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Solution

The fourth proportional to 55,515.10, 77,896.10 and 55,515.10 is: 77,896.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,515.10 : 77,896.10 = 55,515.10 : x
  2. Step 2: Convert to fraction form
    55,515.10/77,896.10 = 55,515.10/x
  3. Step 3: Cross multiply
    55,515.10x = 77,896.10 × 55,515.10
  4. Step 4: Simplify right side
    55,515.10x = 4,324,409,781.11
  5. Step 5: Solve for x
    x = 4,324,409,781.11/55,515.10
  6. Step 6: Final answer
    x = 77,896.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.