Home / 66,721.68-92,075.87-36,507.20

Finding the Fourth Proportional to 66,721.68, 92,075.87 and 36,507.20

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Solution

The fourth proportional to 66,721.68, 92,075.87 and 36,507.20 is: 50,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.68 : 92,075.87 = 36,507.20 : x
  2. Step 2: Convert to fraction form
    66,721.68/92,075.87 = 36,507.20/x
  3. Step 3: Cross multiply
    66,721.68x = 92,075.87 × 36,507.20
  4. Step 4: Simplify right side
    66,721.68x = 3,361,431,832.15
  5. Step 5: Solve for x
    x = 3,361,431,832.15/66,721.68
  6. Step 6: Final answer
    x = 50,379.90

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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.