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Finding the Fourth Proportional to 70,786.20, 97,684.96 and 38,955.09

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Solution

The fourth proportional to 70,786.20, 97,684.96 and 38,955.09 is: 53,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,786.20 : 97,684.96 = 38,955.09 : x
  2. Step 2: Convert to fraction form
    70,786.20/97,684.96 = 38,955.09/x
  3. Step 3: Cross multiply
    70,786.20x = 97,684.96 × 38,955.09
  4. Step 4: Simplify right side
    70,786.20x = 3,805,326,408.45
  5. Step 5: Solve for x
    x = 3,805,326,408.45/70,786.20
  6. Step 6: Final answer
    x = 53,758.03

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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.