Home / 79,145.64-118,530-45,795.42

Finding the Fourth Proportional to 79,145.64, 118,530 and 45,795.42

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Solution

The fourth proportional to 79,145.64, 118,530 and 45,795.42 is: 68,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,145.64 : 118,530 = 45,795.42 : x
  2. Step 2: Convert to fraction form
    79,145.64/118,530 = 45,795.42/x
  3. Step 3: Cross multiply
    79,145.64x = 118,530 × 45,795.42
  4. Step 4: Simplify right side
    79,145.64x = 5,428,131,132.60
  5. Step 5: Solve for x
    x = 5,428,131,132.60/79,145.64
  6. Step 6: Final answer
    x = 68,584.08

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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.