Home / 69,385.68-104,081.40-21,999.72

Finding the Fourth Proportional to 69,385.68, 104,081.40 and 21,999.72

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Solution

The fourth proportional to 69,385.68, 104,081.40 and 21,999.72 is: 33,000.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,385.68 : 104,081.40 = 21,999.72 : x
  2. Step 2: Convert to fraction form
    69,385.68/104,081.40 = 21,999.72/x
  3. Step 3: Cross multiply
    69,385.68x = 104,081.40 × 21,999.72
  4. Step 4: Simplify right side
    69,385.68x = 2,289,761,657.21
  5. Step 5: Solve for x
    x = 2,289,761,657.21/69,385.68
  6. Step 6: Final answer
    x = 33,000.49

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1.5x scale

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.