Home / 81,075.70-111,852.30-54,175.60

Finding the Fourth Proportional to 81,075.70, 111,852.30 and 54,175.60

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Solution

The fourth proportional to 81,075.70, 111,852.30 and 54,175.60 is: 74,740.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,075.70 : 111,852.30 = 54,175.60 : x
  2. Step 2: Convert to fraction form
    81,075.70/111,852.30 = 54,175.60/x
  3. Step 3: Cross multiply
    81,075.70x = 111,852.30 × 54,175.60
  4. Step 4: Simplify right side
    81,075.70x = 6,059,665,463.88
  5. Step 5: Solve for x
    x = 6,059,665,463.88/81,075.70
  6. Step 6: Final answer
    x = 74,740.83

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1.5x scale

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.