Home / 84,075.87-125,583.39-70,789.85

Finding the Fourth Proportional to 84,075.87, 125,583.39 and 70,789.85

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Solution

The fourth proportional to 84,075.87, 125,583.39 and 70,789.85 is: 105,738.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,075.87 : 125,583.39 = 70,789.85 : x
  2. Step 2: Convert to fraction form
    84,075.87/125,583.39 = 70,789.85/x
  3. Step 3: Cross multiply
    84,075.87x = 125,583.39 × 70,789.85
  4. Step 4: Simplify right side
    84,075.87x = 8,890,028,984.52
  5. Step 5: Solve for x
    x = 8,890,028,984.52/84,075.87
  6. Step 6: Final answer
    x = 105,738.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.