Home / 91,912.23-126,831.29-51,077.56

Finding the Fourth Proportional to 91,912.23, 126,831.29 and 51,077.56

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Solution

The fourth proportional to 91,912.23, 126,831.29 and 51,077.56 is: 70,482.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,912.23 : 126,831.29 = 51,077.56 : x
  2. Step 2: Convert to fraction form
    91,912.23/126,831.29 = 51,077.56/x
  3. Step 3: Cross multiply
    91,912.23x = 126,831.29 × 51,077.56
  4. Step 4: Simplify right side
    91,912.23x = 6,478,232,824.85
  5. Step 5: Solve for x
    x = 6,478,232,824.85/91,912.23
  6. Step 6: Final answer
    x = 70,482.82

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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.