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Finding the Fourth Proportional to 70,018.82, 96,634.28 and 39,808.70

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Solution

The fourth proportional to 70,018.82, 96,634.28 and 39,808.70 is: 54,940.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.82 : 96,634.28 = 39,808.70 : x
  2. Step 2: Convert to fraction form
    70,018.82/96,634.28 = 39,808.70/x
  3. Step 3: Cross multiply
    70,018.82x = 96,634.28 × 39,808.70
  4. Step 4: Simplify right side
    70,018.82x = 3,846,885,062.24
  5. Step 5: Solve for x
    x = 3,846,885,062.24/70,018.82
  6. Step 6: Final answer
    x = 54,940.73

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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.