Home / 81,907.20-122,830.08-35,136

Finding the Fourth Proportional to 81,907.20, 122,830.08 and 35,136

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Solution

The fourth proportional to 81,907.20, 122,830.08 and 35,136 is: 52,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,907.20 : 122,830.08 = 35,136 : x
  2. Step 2: Convert to fraction form
    81,907.20/122,830.08 = 35,136/x
  3. Step 3: Cross multiply
    81,907.20x = 122,830.08 × 35,136
  4. Step 4: Simplify right side
    81,907.20x = 4,315,757,690.88
  5. Step 5: Solve for x
    x = 4,315,757,690.88/81,907.20
  6. Step 6: Final answer
    x = 52,690.82

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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.