Home / 71,907.20-99,232.32-40,075.84

Finding the Fourth Proportional to 71,907.20, 99,232.32 and 40,075.84

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Solution

The fourth proportional to 71,907.20, 99,232.32 and 40,075.84 is: 55,304.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,907.20 : 99,232.32 = 40,075.84 : x
  2. Step 2: Convert to fraction form
    71,907.20/99,232.32 = 40,075.84/x
  3. Step 3: Cross multiply
    71,907.20x = 99,232.32 × 40,075.84
  4. Step 4: Simplify right side
    71,907.20x = 3,976,818,579.15
  5. Step 5: Solve for x
    x = 3,976,818,579.15/71,907.20
  6. Step 6: Final answer
    x = 55,304.87

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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.