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Finding the Fourth Proportional to 93,489.25, 128,949.69 and 63,261.27

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Solution

The fourth proportional to 93,489.25, 128,949.69 and 63,261.27 is: 87,256.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,489.25 : 128,949.69 = 63,261.27 : x
  2. Step 2: Convert to fraction form
    93,489.25/128,949.69 = 63,261.27/x
  3. Step 3: Cross multiply
    93,489.25x = 128,949.69 × 63,261.27
  4. Step 4: Simplify right side
    93,489.25x = 8,157,520,668.91
  5. Step 5: Solve for x
    x = 8,157,520,668.91/93,489.25
  6. Step 6: Final answer
    x = 87,256.24

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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.