Home / 45,119.40-67,679.10-31,986.60

Finding the Fourth Proportional to 45,119.40, 67,679.10 and 31,986.60

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Solution

The fourth proportional to 45,119.40, 67,679.10 and 31,986.60 is: 47,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,119.40 : 67,679.10 = 31,986.60 : x
  2. Step 2: Convert to fraction form
    45,119.40/67,679.10 = 31,986.60/x
  3. Step 3: Cross multiply
    45,119.40x = 67,679.10 × 31,986.60
  4. Step 4: Simplify right side
    45,119.40x = 2,164,824,300.06
  5. Step 5: Solve for x
    x = 2,164,824,300.06/45,119.40
  6. Step 6: Final answer
    x = 47,979.90

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1.5x scale

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.