Home / 91,831.70-126,729.63-51,548.38

Finding the Fourth Proportional to 91,831.70, 126,729.63 and 51,548.38

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Solution

The fourth proportional to 91,831.70, 126,729.63 and 51,548.38 is: 71,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,831.70 : 126,729.63 = 51,548.38 : x
  2. Step 2: Convert to fraction form
    91,831.70/126,729.63 = 51,548.38/x
  3. Step 3: Cross multiply
    91,831.70x = 126,729.63 × 51,548.38
  4. Step 4: Simplify right side
    91,831.70x = 6,532,706,233.11
  5. Step 5: Solve for x
    x = 6,532,706,233.11/91,831.70
  6. Step 6: Final answer
    x = 71,137.81

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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.