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Finding the Fourth Proportional to 70,821.97, 97,604.14 and 66,327.69

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Solution

The fourth proportional to 70,821.97, 97,604.14 and 66,327.69 is: 91,410.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.97 : 97,604.14 = 66,327.69 : x
  2. Step 2: Convert to fraction form
    70,821.97/97,604.14 = 66,327.69/x
  3. Step 3: Cross multiply
    70,821.97x = 97,604.14 × 66,327.69
  4. Step 4: Simplify right side
    70,821.97x = 6,473,856,641.66
  5. Step 5: Solve for x
    x = 6,473,856,641.66/70,821.97
  6. Step 6: Final answer
    x = 91,410.29

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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.