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Finding the Fourth Proportional to 93,144.60, 128,540.16 and 50,703.66

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Solution

The fourth proportional to 93,144.60, 128,540.16 and 50,703.66 is: 69,971.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,144.60 : 128,540.16 = 50,703.66 : x
  2. Step 2: Convert to fraction form
    93,144.60/128,540.16 = 50,703.66/x
  3. Step 3: Cross multiply
    93,144.60x = 128,540.16 × 50,703.66
  4. Step 4: Simplify right side
    93,144.60x = 6,517,456,568.99
  5. Step 5: Solve for x
    x = 6,517,456,568.99/93,144.60
  6. Step 6: Final answer
    x = 69,971.38

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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.