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Finding the Fourth Proportional to 79,511.37, 109,612.76 and 63,236

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Solution

The fourth proportional to 79,511.37, 109,612.76 and 63,236 is: 87,175.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.37 : 109,612.76 = 63,236 : x
  2. Step 2: Convert to fraction form
    79,511.37/109,612.76 = 63,236/x
  3. Step 3: Cross multiply
    79,511.37x = 109,612.76 × 63,236
  4. Step 4: Simplify right side
    79,511.37x = 6,931,472,491.36
  5. Step 5: Solve for x
    x = 6,931,472,491.36/79,511.37
  6. Step 6: Final answer
    x = 87,175.87

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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.