Home / 81,075.09-111,851.42-54,174.99

Finding the Fourth Proportional to 81,075.09, 111,851.42 and 54,174.99

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Solution

The fourth proportional to 81,075.09, 111,851.42 and 54,174.99 is: 74,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,075.09 : 111,851.42 = 54,174.99 : x
  2. Step 2: Convert to fraction form
    81,075.09/111,851.42 = 54,174.99/x
  3. Step 3: Cross multiply
    81,075.09x = 111,851.42 × 54,174.99
  4. Step 4: Simplify right side
    81,075.09x = 6,059,549,708.55
  5. Step 5: Solve for x
    x = 6,059,549,708.55/81,075.09
  6. Step 6: Final answer
    x = 74,739.97

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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.