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Finding the Fourth Proportional to 81,075.66, 111,879.84 and 45,267.96

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Solution

The fourth proportional to 81,075.66, 111,879.84 and 45,267.96 is: 62,467.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,075.66 : 111,879.84 = 45,267.96 : x
  2. Step 2: Convert to fraction form
    81,075.66/111,879.84 = 45,267.96/x
  3. Step 3: Cross multiply
    81,075.66x = 111,879.84 × 45,267.96
  4. Step 4: Simplify right side
    81,075.66x = 5,064,572,121.93
  5. Step 5: Solve for x
    x = 5,064,572,121.93/81,075.66
  6. Step 6: Final answer
    x = 62,467.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.