Home / 82,051.20-123,002.55-57,103.20

Finding the Fourth Proportional to 82,051.20, 123,002.55 and 57,103.20

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Solution

The fourth proportional to 82,051.20, 123,002.55 and 57,103.20 is: 85,603.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,051.20 : 123,002.55 = 57,103.20 : x
  2. Step 2: Convert to fraction form
    82,051.20/123,002.55 = 57,103.20/x
  3. Step 3: Cross multiply
    82,051.20x = 123,002.55 × 57,103.20
  4. Step 4: Simplify right side
    82,051.20x = 7,023,839,213.16
  5. Step 5: Solve for x
    x = 7,023,839,213.16/82,051.20
  6. Step 6: Final answer
    x = 85,603.13

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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.