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Finding the Fourth Proportional to 71,915.42, 99,103.02 and 51,736.70

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Solution

The fourth proportional to 71,915.42, 99,103.02 and 51,736.70 is: 71,295.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,915.42 : 99,103.02 = 51,736.70 : x
  2. Step 2: Convert to fraction form
    71,915.42/99,103.02 = 51,736.70/x
  3. Step 3: Cross multiply
    71,915.42x = 99,103.02 × 51,736.70
  4. Step 4: Simplify right side
    71,915.42x = 5,127,263,214.83
  5. Step 5: Solve for x
    x = 5,127,263,214.83/71,915.42
  6. Step 6: Final answer
    x = 71,295.74

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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.