Home / 78,497.10-117,745.65-64,589.85

Finding the Fourth Proportional to 78,497.10, 117,745.65 and 64,589.85

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Solution

The fourth proportional to 78,497.10, 117,745.65 and 64,589.85 is: 96,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,497.10 : 117,745.65 = 64,589.85 : x
  2. Step 2: Convert to fraction form
    78,497.10/117,745.65 = 64,589.85/x
  3. Step 3: Cross multiply
    78,497.10x = 117,745.65 × 64,589.85
  4. Step 4: Simplify right side
    78,497.10x = 7,605,173,871.65
  5. Step 5: Solve for x
    x = 7,605,173,871.65/78,497.10
  6. Step 6: Final answer
    x = 96,884.78

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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.