Home / 68,945.85-103,406.45-18,345.16

Finding the Fourth Proportional to 68,945.85, 103,406.45 and 18,345.16

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Solution

The fourth proportional to 68,945.85, 103,406.45 and 18,345.16 is: 27,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,945.85 : 103,406.45 = 18,345.16 : x
  2. Step 2: Convert to fraction form
    68,945.85/103,406.45 = 18,345.16/x
  3. Step 3: Cross multiply
    68,945.85x = 103,406.45 × 18,345.16
  4. Step 4: Simplify right side
    68,945.85x = 1,897,007,870.28
  5. Step 5: Solve for x
    x = 1,897,007,870.28/68,945.85
  6. Step 6: Final answer
    x = 27,514.46

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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.