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Finding the Fourth Proportional to 70,546.39, 105,817.54 and 20,627.66

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Solution

The fourth proportional to 70,546.39, 105,817.54 and 20,627.66 is: 30,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,546.39 : 105,817.54 = 20,627.66 : x
  2. Step 2: Convert to fraction form
    70,546.39/105,817.54 = 20,627.66/x
  3. Step 3: Cross multiply
    70,546.39x = 105,817.54 × 20,627.66
  4. Step 4: Simplify right side
    70,546.39x = 2,182,768,488.81
  5. Step 5: Solve for x
    x = 2,182,768,488.81/70,546.39
  6. Step 6: Final answer
    x = 30,940.89

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1.5x scale

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.