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Finding the Fourth Proportional to 55,757.28, 76,919.04 and 34,528.80

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Solution

The fourth proportional to 55,757.28, 76,919.04 and 34,528.80 is: 47,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,757.28 : 76,919.04 = 34,528.80 : x
  2. Step 2: Convert to fraction form
    55,757.28/76,919.04 = 34,528.80/x
  3. Step 3: Cross multiply
    55,757.28x = 76,919.04 × 34,528.80
  4. Step 4: Simplify right side
    55,757.28x = 2,655,922,148.35
  5. Step 5: Solve for x
    x = 2,655,922,148.35/55,757.28
  6. Step 6: Final answer
    x = 47,633.64

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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.