Home / 83,986.12-115,880.96-47,679.52

Finding the Fourth Proportional to 83,986.12, 115,880.96 and 47,679.52

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Solution

The fourth proportional to 83,986.12, 115,880.96 and 47,679.52 is: 65,786.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,986.12 : 115,880.96 = 47,679.52 : x
  2. Step 2: Convert to fraction form
    83,986.12/115,880.96 = 47,679.52/x
  3. Step 3: Cross multiply
    83,986.12x = 115,880.96 × 47,679.52
  4. Step 4: Simplify right side
    83,986.12x = 5,525,148,549.94
  5. Step 5: Solve for x
    x = 5,525,148,549.94/83,986.12
  6. Step 6: Final answer
    x = 65,786.45

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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.