Home / 82,578.60-123,854.86-68,628.28

Finding the Fourth Proportional to 82,578.60, 123,854.86 and 68,628.28

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Solution

The fourth proportional to 82,578.60, 123,854.86 and 68,628.28 is: 102,931.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,578.60 : 123,854.86 = 68,628.28 : x
  2. Step 2: Convert to fraction form
    82,578.60/123,854.86 = 68,628.28/x
  3. Step 3: Cross multiply
    82,578.60x = 123,854.86 × 68,628.28
  4. Step 4: Simplify right side
    82,578.60x = 8,499,946,011.44
  5. Step 5: Solve for x
    x = 8,499,946,011.44/82,578.60
  6. Step 6: Final answer
    x = 102,931.58

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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.