Home / 65,867.05-90,898.30-40,016.80

Finding the Fourth Proportional to 65,867.05, 90,898.30 and 40,016.80

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Solution

The fourth proportional to 65,867.05, 90,898.30 and 40,016.80 is: 55,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,867.05 : 90,898.30 = 40,016.80 : x
  2. Step 2: Convert to fraction form
    65,867.05/90,898.30 = 40,016.80/x
  3. Step 3: Cross multiply
    65,867.05x = 90,898.30 × 40,016.80
  4. Step 4: Simplify right side
    65,867.05x = 3,637,458,991.40
  5. Step 5: Solve for x
    x = 3,637,458,991.40/65,867.05
  6. Step 6: Final answer
    x = 55,224.26

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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.