Home / 78,556.86-117,836.55-74,569.23

Finding the Fourth Proportional to 78,556.86, 117,836.55 and 74,569.23

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Solution

The fourth proportional to 78,556.86, 117,836.55 and 74,569.23 is: 111,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.86 : 117,836.55 = 74,569.23 : x
  2. Step 2: Convert to fraction form
    78,556.86/117,836.55 = 74,569.23/x
  3. Step 3: Cross multiply
    78,556.86x = 117,836.55 × 74,569.23
  4. Step 4: Simplify right side
    78,556.86x = 8,786,980,799.36
  5. Step 5: Solve for x
    x = 8,786,980,799.36/78,556.86
  6. Step 6: Final answer
    x = 111,855.04

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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.