Home / 77,729.12-116,617.49-39,805.24

Finding the Fourth Proportional to 77,729.12, 116,617.49 and 39,805.24

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Solution

The fourth proportional to 77,729.12, 116,617.49 and 39,805.24 is: 59,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,729.12 : 116,617.49 = 39,805.24 : x
  2. Step 2: Convert to fraction form
    77,729.12/116,617.49 = 39,805.24/x
  3. Step 3: Cross multiply
    77,729.12x = 116,617.49 × 39,805.24
  4. Step 4: Simplify right side
    77,729.12x = 4,641,987,177.65
  5. Step 5: Solve for x
    x = 4,641,987,177.65/77,729.12
  6. Step 6: Final answer
    x = 59,720.05

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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.