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Finding the Fourth Proportional to 60,936.60, 91,406.93 and 20,955.19

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Solution

The fourth proportional to 60,936.60, 91,406.93 and 20,955.19 is: 31,433.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,936.60 : 91,406.93 = 20,955.19 : x
  2. Step 2: Convert to fraction form
    60,936.60/91,406.93 = 20,955.19/x
  3. Step 3: Cross multiply
    60,936.60x = 91,406.93 × 20,955.19
  4. Step 4: Simplify right side
    60,936.60x = 1,915,449,818.73
  5. Step 5: Solve for x
    x = 1,915,449,818.73/60,936.60
  6. Step 6: Final answer
    x = 31,433.49

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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.