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Finding the Fourth Proportional to 93,393.54, 128,910.69 and 65,108.34

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Solution

The fourth proportional to 93,393.54, 128,910.69 and 65,108.34 is: 89,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,393.54 : 128,910.69 = 65,108.34 : x
  2. Step 2: Convert to fraction form
    93,393.54/128,910.69 = 65,108.34/x
  3. Step 3: Cross multiply
    93,393.54x = 128,910.69 × 65,108.34
  4. Step 4: Simplify right side
    93,393.54x = 8,393,161,034.15
  5. Step 5: Solve for x
    x = 8,393,161,034.15/93,393.54
  6. Step 6: Final answer
    x = 89,868.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.