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Finding the Fourth Proportional to 60,818.81, 91,190.95 and 21,380.45

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Solution

The fourth proportional to 60,818.81, 91,190.95 and 21,380.45 is: 32,057.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,818.81 : 91,190.95 = 21,380.45 : x
  2. Step 2: Convert to fraction form
    60,818.81/91,190.95 = 21,380.45/x
  3. Step 3: Cross multiply
    60,818.81x = 91,190.95 × 21,380.45
  4. Step 4: Simplify right side
    60,818.81x = 1,949,703,546.93
  5. Step 5: Solve for x
    x = 1,949,703,546.93/60,818.81
  6. Step 6: Final answer
    x = 32,057.57

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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.