Home / 72,519.09-100,075.19-40,253.68

Finding the Fourth Proportional to 72,519.09, 100,075.19 and 40,253.68

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Solution

The fourth proportional to 72,519.09, 100,075.19 and 40,253.68 is: 55,549.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,519.09 : 100,075.19 = 40,253.68 : x
  2. Step 2: Convert to fraction form
    72,519.09/100,075.19 = 40,253.68/x
  3. Step 3: Cross multiply
    72,519.09x = 100,075.19 × 40,253.68
  4. Step 4: Simplify right side
    72,519.09x = 4,028,394,674.20
  5. Step 5: Solve for x
    x = 4,028,394,674.20/72,519.09
  6. Step 6: Final answer
    x = 55,549.44

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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.