Home / 69,983.15-104,943.12-20,051.81

Finding the Fourth Proportional to 69,983.15, 104,943.12 and 20,051.81

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Solution

The fourth proportional to 69,983.15, 104,943.12 and 20,051.81 is: 30,068.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,983.15 : 104,943.12 = 20,051.81 : x
  2. Step 2: Convert to fraction form
    69,983.15/104,943.12 = 20,051.81/x
  3. Step 3: Cross multiply
    69,983.15x = 104,943.12 × 20,051.81
  4. Step 4: Simplify right side
    69,983.15x = 2,104,298,978.33
  5. Step 5: Solve for x
    x = 2,104,298,978.33/69,983.15
  6. Step 6: Final answer
    x = 30,068.65

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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.