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Finding the Fourth Proportional to 70,728.07, 97,602.78 and 38,896.97

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Solution

The fourth proportional to 70,728.07, 97,602.78 and 38,896.97 is: 53,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,728.07 : 97,602.78 = 38,896.97 : x
  2. Step 2: Convert to fraction form
    70,728.07/97,602.78 = 38,896.97/x
  3. Step 3: Cross multiply
    70,728.07x = 97,602.78 × 38,896.97
  4. Step 4: Simplify right side
    70,728.07x = 3,796,451,917.56
  5. Step 5: Solve for x
    x = 3,796,451,917.56/70,728.07
  6. Step 6: Final answer
    x = 53,676.74

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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.