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Finding the Fourth Proportional to 91,706.16, 126,576.99 and 55,915.89

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Solution

The fourth proportional to 91,706.16, 126,576.99 and 55,915.89 is: 77,177.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,706.16 : 126,576.99 = 55,915.89 : x
  2. Step 2: Convert to fraction form
    91,706.16/126,576.99 = 55,915.89/x
  3. Step 3: Cross multiply
    91,706.16x = 126,576.99 × 55,915.89
  4. Step 4: Simplify right side
    91,706.16x = 7,077,665,049.37
  5. Step 5: Solve for x
    x = 7,077,665,049.37/91,706.16
  6. Step 6: Final answer
    x = 77,177.64

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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.