Home / 66,831.41-92,218.60-39,964.12

Finding the Fourth Proportional to 66,831.41, 92,218.60 and 39,964.12

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Solution

The fourth proportional to 66,831.41, 92,218.60 and 39,964.12 is: 55,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,831.41 : 92,218.60 = 39,964.12 : x
  2. Step 2: Convert to fraction form
    66,831.41/92,218.60 = 39,964.12/x
  3. Step 3: Cross multiply
    66,831.41x = 92,218.60 × 39,964.12
  4. Step 4: Simplify right side
    66,831.41x = 3,685,435,016.04
  5. Step 5: Solve for x
    x = 3,685,435,016.04/66,831.41
  6. Step 6: Final answer
    x = 55,145.25

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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.