Home / 85,949.56-118,615.62-57,219.64

Finding the Fourth Proportional to 85,949.56, 118,615.62 and 57,219.64

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Solution

The fourth proportional to 85,949.56, 118,615.62 and 57,219.64 is: 78,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,949.56 : 118,615.62 = 57,219.64 : x
  2. Step 2: Convert to fraction form
    85,949.56/118,615.62 = 57,219.64/x
  3. Step 3: Cross multiply
    85,949.56x = 118,615.62 × 57,219.64
  4. Step 4: Simplify right side
    85,949.56x = 6,787,143,074.78
  5. Step 5: Solve for x
    x = 6,787,143,074.78/85,949.56
  6. Step 6: Final answer
    x = 78,966.58

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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.