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Finding the Fourth Proportional to 70,104.42, 105,133.97 and 30,112.70

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Solution

The fourth proportional to 70,104.42, 105,133.97 and 30,112.70 is: 45,159.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,104.42 : 105,133.97 = 30,112.70 : x
  2. Step 2: Convert to fraction form
    70,104.42/105,133.97 = 30,112.70/x
  3. Step 3: Cross multiply
    70,104.42x = 105,133.97 × 30,112.70
  4. Step 4: Simplify right side
    70,104.42x = 3,165,867,248.03
  5. Step 5: Solve for x
    x = 3,165,867,248.03/70,104.42
  6. Step 6: Final answer
    x = 45,159.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.