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Finding the Fourth Proportional to 70,090.14, 96,721.02 and 39,872.62

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Solution

The fourth proportional to 70,090.14, 96,721.02 and 39,872.62 is: 55,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,090.14 : 96,721.02 = 39,872.62 : x
  2. Step 2: Convert to fraction form
    70,090.14/96,721.02 = 39,872.62/x
  3. Step 3: Cross multiply
    70,090.14x = 96,721.02 × 39,872.62
  4. Step 4: Simplify right side
    70,090.14x = 3,856,520,597.37
  5. Step 5: Solve for x
    x = 3,856,520,597.37/70,090.14
  6. Step 6: Final answer
    x = 55,022.30

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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.