Home / 76,830.72-115,198.56-30,062.40

Finding the Fourth Proportional to 76,830.72, 115,198.56 and 30,062.40

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Solution

The fourth proportional to 76,830.72, 115,198.56 and 30,062.40 is: 45,075.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,830.72 : 115,198.56 = 30,062.40 : x
  2. Step 2: Convert to fraction form
    76,830.72/115,198.56 = 30,062.40/x
  3. Step 3: Cross multiply
    76,830.72x = 115,198.56 × 30,062.40
  4. Step 4: Simplify right side
    76,830.72x = 3,463,145,190.14
  5. Step 5: Solve for x
    x = 3,463,145,190.14/76,830.72
  6. Step 6: Final answer
    x = 45,075.01

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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.