Home / 66,129.78-99,195.48-19,383.60

Finding the Fourth Proportional to 66,129.78, 99,195.48 and 19,383.60

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Solution

The fourth proportional to 66,129.78, 99,195.48 and 19,383.60 is: 29,075.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,129.78 : 99,195.48 = 19,383.60 : x
  2. Step 2: Convert to fraction form
    66,129.78/99,195.48 = 19,383.60/x
  3. Step 3: Cross multiply
    66,129.78x = 99,195.48 × 19,383.60
  4. Step 4: Simplify right side
    66,129.78x = 1,922,765,506.13
  5. Step 5: Solve for x
    x = 1,922,765,506.13/66,129.78
  6. Step 6: Final answer
    x = 29,075.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.