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Finding the Fourth Proportional to 70,936.65, 97,891.94 and 39,105.55

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Solution

The fourth proportional to 70,936.65, 97,891.94 and 39,105.55 is: 53,965.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,936.65 : 97,891.94 = 39,105.55 : x
  2. Step 2: Convert to fraction form
    70,936.65/97,891.94 = 39,105.55/x
  3. Step 3: Cross multiply
    70,936.65x = 97,891.94 × 39,105.55
  4. Step 4: Simplify right side
    70,936.65x = 3,828,117,958.74
  5. Step 5: Solve for x
    x = 3,828,117,958.74/70,936.65
  6. Step 6: Final answer
    x = 53,965.31

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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.