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Finding the Fourth Proportional to 68,693.54, 94,795.98 and 38,478.76

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Solution

The fourth proportional to 68,693.54, 94,795.98 and 38,478.76 is: 53,100.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,693.54 : 94,795.98 = 38,478.76 : x
  2. Step 2: Convert to fraction form
    68,693.54/94,795.98 = 38,478.76/x
  3. Step 3: Cross multiply
    68,693.54x = 94,795.98 × 38,478.76
  4. Step 4: Simplify right side
    68,693.54x = 3,647,631,763.38
  5. Step 5: Solve for x
    x = 3,647,631,763.38/68,693.54
  6. Step 6: Final answer
    x = 53,100.07

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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.