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Finding the Fourth Proportional to 91,706.56, 126,562.72 and 51,419.68

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Solution

The fourth proportional to 91,706.56, 126,562.72 and 51,419.68 is: 70,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,706.56 : 126,562.72 = 51,419.68 : x
  2. Step 2: Convert to fraction form
    91,706.56/126,562.72 = 51,419.68/x
  3. Step 3: Cross multiply
    91,706.56x = 126,562.72 × 51,419.68
  4. Step 4: Simplify right side
    91,706.56x = 6,507,814,562.33
  5. Step 5: Solve for x
    x = 6,507,814,562.33/91,706.56
  6. Step 6: Final answer
    x = 70,963.46

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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.