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Finding the Fourth Proportional to 55,161.76, 82,790.40 and 28,884.88

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Solution

The fourth proportional to 55,161.76, 82,790.40 and 28,884.88 is: 43,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,161.76 : 82,790.40 = 28,884.88 : x
  2. Step 2: Convert to fraction form
    55,161.76/82,790.40 = 28,884.88/x
  3. Step 3: Cross multiply
    55,161.76x = 82,790.40 × 28,884.88
  4. Step 4: Simplify right side
    55,161.76x = 2,391,390,769.15
  5. Step 5: Solve for x
    x = 2,391,390,769.15/55,161.76
  6. Step 6: Final answer
    x = 43,352.33

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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.