Home / 55,255.30-82,785.35-53,428.10

Finding the Fourth Proportional to 55,255.30, 82,785.35 and 53,428.10

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Solution

The fourth proportional to 55,255.30, 82,785.35 and 53,428.10 is: 80,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,255.30 : 82,785.35 = 53,428.10 : x
  2. Step 2: Convert to fraction form
    55,255.30/82,785.35 = 53,428.10/x
  3. Step 3: Cross multiply
    55,255.30x = 82,785.35 × 53,428.10
  4. Step 4: Simplify right side
    55,255.30x = 4,423,063,958.34
  5. Step 5: Solve for x
    x = 4,423,063,958.34/55,255.30
  6. Step 6: Final answer
    x = 80,047.78

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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.