Home / 81,075.15-111,876.33-45,258.57

Finding the Fourth Proportional to 81,075.15, 111,876.33 and 45,258.57

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Solution

The fourth proportional to 81,075.15, 111,876.33 and 45,258.57 is: 62,452.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,075.15 : 111,876.33 = 45,258.57 : x
  2. Step 2: Convert to fraction form
    81,075.15/111,876.33 = 45,258.57/x
  3. Step 3: Cross multiply
    81,075.15x = 111,876.33 × 45,258.57
  4. Step 4: Simplify right side
    81,075.15x = 5,063,362,712.65
  5. Step 5: Solve for x
    x = 5,063,362,712.65/81,075.15
  6. Step 6: Final answer
    x = 62,452.71

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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.