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Finding the Fourth Proportional to 93,988, 140,982 and 28,324

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Solution

The fourth proportional to 93,988, 140,982 and 28,324 is: 42,486

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,988 : 140,982 = 28,324 : x
  2. Step 2: Convert to fraction form
    93,988/140,982 = 28,324/x
  3. Step 3: Cross multiply
    93,988x = 140,982 × 28,324
  4. Step 4: Simplify right side
    93,988x = 3,993,174,168
  5. Step 5: Solve for x
    x = 3,993,174,168/93,988
  6. Step 6: Final answer
    x = 42,486

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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.