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Finding the Fourth Proportional to 51,316.52, 76,915.02 and 21,724.52

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Solution

The fourth proportional to 51,316.52, 76,915.02 and 21,724.52 is: 32,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,316.52 : 76,915.02 = 21,724.52 : x
  2. Step 2: Convert to fraction form
    51,316.52/76,915.02 = 21,724.52/x
  3. Step 3: Cross multiply
    51,316.52x = 76,915.02 × 21,724.52
  4. Step 4: Simplify right side
    51,316.52x = 1,670,941,890.29
  5. Step 5: Solve for x
    x = 1,670,941,890.29/51,316.52
  6. Step 6: Final answer
    x = 32,561.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.