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Finding the Fourth Proportional to 93,081, 128,450.82 and 55,354.44

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Solution

The fourth proportional to 93,081, 128,450.82 and 55,354.44 is: 76,388.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,081 : 128,450.82 = 55,354.44 : x
  2. Step 2: Convert to fraction form
    93,081/128,450.82 = 55,354.44/x
  3. Step 3: Cross multiply
    93,081x = 128,450.82 × 55,354.44
  4. Step 4: Simplify right side
    93,081x = 7,110,323,208.64
  5. Step 5: Solve for x
    x = 7,110,323,208.64/93,081
  6. Step 6: Final answer
    x = 76,388.56

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1.5x scale

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.