Home / 68,727.12-102,915.72-45,282.48

Finding the Fourth Proportional to 68,727.12, 102,915.72 and 45,282.48

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Solution

The fourth proportional to 68,727.12, 102,915.72 and 45,282.48 is: 67,808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,727.12 : 102,915.72 = 45,282.48 : x
  2. Step 2: Convert to fraction form
    68,727.12/102,915.72 = 45,282.48/x
  3. Step 3: Cross multiply
    68,727.12x = 102,915.72 × 45,282.48
  4. Step 4: Simplify right side
    68,727.12x = 4,660,279,032.59
  5. Step 5: Solve for x
    x = 4,660,279,032.59/68,727.12
  6. Step 6: Final answer
    x = 67,808.44

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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.