Home / 72,110.76-108,165.66-19,520.04

Finding the Fourth Proportional to 72,110.76, 108,165.66 and 19,520.04

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Solution

The fourth proportional to 72,110.76, 108,165.66 and 19,520.04 is: 29,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,110.76 : 108,165.66 = 19,520.04 : x
  2. Step 2: Convert to fraction form
    72,110.76/108,165.66 = 19,520.04/x
  3. Step 3: Cross multiply
    72,110.76x = 108,165.66 × 19,520.04
  4. Step 4: Simplify right side
    72,110.76x = 2,111,398,009.83
  5. Step 5: Solve for x
    x = 2,111,398,009.83/72,110.76
  6. Step 6: Final answer
    x = 29,279.93

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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.