Home / 78,228.06-117,342.27-54,958.38

Finding the Fourth Proportional to 78,228.06, 117,342.27 and 54,958.38

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Solution

The fourth proportional to 78,228.06, 117,342.27 and 54,958.38 is: 82,437.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,228.06 : 117,342.27 = 54,958.38 : x
  2. Step 2: Convert to fraction form
    78,228.06/117,342.27 = 54,958.38/x
  3. Step 3: Cross multiply
    78,228.06x = 117,342.27 × 54,958.38
  4. Step 4: Simplify right side
    78,228.06x = 6,448,941,064.72
  5. Step 5: Solve for x
    x = 6,448,941,064.72/78,228.06
  6. Step 6: Final answer
    x = 82,437.70

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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.