Home / 85,620.38-118,148.04-57,968.78

Finding the Fourth Proportional to 85,620.38, 118,148.04 and 57,968.78

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Solution

The fourth proportional to 85,620.38, 118,148.04 and 57,968.78 is: 79,991.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,620.38 : 118,148.04 = 57,968.78 : x
  2. Step 2: Convert to fraction form
    85,620.38/118,148.04 = 57,968.78/x
  3. Step 3: Cross multiply
    85,620.38x = 118,148.04 × 57,968.78
  4. Step 4: Simplify right side
    85,620.38x = 6,848,897,147.45
  5. Step 5: Solve for x
    x = 6,848,897,147.45/85,620.38
  6. Step 6: Final answer
    x = 79,991.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.