Home / 76,929.60-106,164.16-45,121.44

Finding the Fourth Proportional to 76,929.60, 106,164.16 and 45,121.44

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Solution

The fourth proportional to 76,929.60, 106,164.16 and 45,121.44 is: 62,268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,929.60 : 106,164.16 = 45,121.44 : x
  2. Step 2: Convert to fraction form
    76,929.60/106,164.16 = 45,121.44/x
  3. Step 3: Cross multiply
    76,929.60x = 106,164.16 × 45,121.44
  4. Step 4: Simplify right side
    76,929.60x = 4,790,279,775.59
  5. Step 5: Solve for x
    x = 4,790,279,775.59/76,929.60
  6. Step 6: Final answer
    x = 62,268.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.