Home / 85,976.45-118,452.33-66,528.49

Finding the Fourth Proportional to 85,976.45, 118,452.33 and 66,528.49

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Solution

The fourth proportional to 85,976.45, 118,452.33 and 66,528.49 is: 91,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,976.45 : 118,452.33 = 66,528.49 : x
  2. Step 2: Convert to fraction form
    85,976.45/118,452.33 = 66,528.49/x
  3. Step 3: Cross multiply
    85,976.45x = 118,452.33 × 66,528.49
  4. Step 4: Simplify right side
    85,976.45x = 7,880,454,799.95
  5. Step 5: Solve for x
    x = 7,880,454,799.95/85,976.45
  6. Step 6: Final answer
    x = 91,658.29

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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.