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Finding the Fourth Proportional to 91,351.88, 126,065.20 and 51,065.60

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Solution

The fourth proportional to 91,351.88, 126,065.20 and 51,065.60 is: 70,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,351.88 : 126,065.20 = 51,065.60 : x
  2. Step 2: Convert to fraction form
    91,351.88/126,065.20 = 51,065.60/x
  3. Step 3: Cross multiply
    91,351.88x = 126,065.20 × 51,065.60
  4. Step 4: Simplify right side
    91,351.88x = 6,437,594,821.79
  5. Step 5: Solve for x
    x = 6,437,594,821.79/91,351.88
  6. Step 6: Final answer
    x = 70,470.31

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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.