Home / 78,134.06-117,145.41-36,558.38

Finding the Fourth Proportional to 78,134.06, 117,145.41 and 36,558.38

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Solution

The fourth proportional to 78,134.06, 117,145.41 and 36,558.38 is: 54,811.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,134.06 : 117,145.41 = 36,558.38 : x
  2. Step 2: Convert to fraction form
    78,134.06/117,145.41 = 36,558.38/x
  3. Step 3: Cross multiply
    78,134.06x = 117,145.41 × 36,558.38
  4. Step 4: Simplify right side
    78,134.06x = 4,282,646,414.04
  5. Step 5: Solve for x
    x = 4,282,646,414.04/78,134.06
  6. Step 6: Final answer
    x = 54,811.52

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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.