Home / 68,780.03-103,403.32-54,917.15

Finding the Fourth Proportional to 68,780.03, 103,403.32 and 54,917.15

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Solution

The fourth proportional to 68,780.03, 103,403.32 and 54,917.15 is: 82,561.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,780.03 : 103,403.32 = 54,917.15 : x
  2. Step 2: Convert to fraction form
    68,780.03/103,403.32 = 54,917.15/x
  3. Step 3: Cross multiply
    68,780.03x = 103,403.32 × 54,917.15
  4. Step 4: Simplify right side
    68,780.03x = 5,678,614,980.63
  5. Step 5: Solve for x
    x = 5,678,614,980.63/68,780.03
  6. Step 6: Final answer
    x = 82,561.98

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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.