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Finding the Fourth Proportional to 93,772, 140,658 and 28,108

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Solution

The fourth proportional to 93,772, 140,658 and 28,108 is: 42,162

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,772 : 140,658 = 28,108 : x
  2. Step 2: Convert to fraction form
    93,772/140,658 = 28,108/x
  3. Step 3: Cross multiply
    93,772x = 140,658 × 28,108
  4. Step 4: Simplify right side
    93,772x = 3,953,615,064
  5. Step 5: Solve for x
    x = 3,953,615,064/93,772
  6. Step 6: Final answer
    x = 42,162

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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.