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Finding the Fourth Proportional to 90,969.96, 125,530.02 and 67,109.88

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Solution

The fourth proportional to 90,969.96, 125,530.02 and 67,109.88 is: 92,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,969.96 : 125,530.02 = 67,109.88 : x
  2. Step 2: Convert to fraction form
    90,969.96/125,530.02 = 67,109.88/x
  3. Step 3: Cross multiply
    90,969.96x = 125,530.02 × 67,109.88
  4. Step 4: Simplify right side
    90,969.96x = 8,424,304,578.60
  5. Step 5: Solve for x
    x = 8,424,304,578.60/90,969.96
  6. Step 6: Final answer
    x = 92,605.35

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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.