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Finding the Fourth Proportional to 70,103.46, 96,739.14 and 39,888.17

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Solution

The fourth proportional to 70,103.46, 96,739.14 and 39,888.17 is: 55,043.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,103.46 : 96,739.14 = 39,888.17 : x
  2. Step 2: Convert to fraction form
    70,103.46/96,739.14 = 39,888.17/x
  3. Step 3: Cross multiply
    70,103.46x = 96,739.14 × 39,888.17
  4. Step 4: Simplify right side
    70,103.46x = 3,858,747,261.97
  5. Step 5: Solve for x
    x = 3,858,747,261.97/70,103.46
  6. Step 6: Final answer
    x = 55,043.61

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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.