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Finding the Fourth Proportional to 70,969.97, 97,836.78 and 55,836.35

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Solution

The fourth proportional to 70,969.97, 97,836.78 and 55,836.35 is: 76,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,969.97 : 97,836.78 = 55,836.35 : x
  2. Step 2: Convert to fraction form
    70,969.97/97,836.78 = 55,836.35/x
  3. Step 3: Cross multiply
    70,969.97x = 97,836.78 × 55,836.35
  4. Step 4: Simplify right side
    70,969.97x = 5,462,848,690.95
  5. Step 5: Solve for x
    x = 5,462,848,690.95/70,969.97
  6. Step 6: Final answer
    x = 76,974.09

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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.