Home / 105,623.76-145,761.48-57,879.12

Finding the Fourth Proportional to 105,623.76, 145,761.48 and 57,879.12

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Solution

The fourth proportional to 105,623.76, 145,761.48 and 57,879.12 is: 79,873.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,623.76 : 145,761.48 = 57,879.12 : x
  2. Step 2: Convert to fraction form
    105,623.76/145,761.48 = 57,879.12/x
  3. Step 3: Cross multiply
    105,623.76x = 145,761.48 × 57,879.12
  4. Step 4: Simplify right side
    105,623.76x = 8,436,546,192.30
  5. Step 5: Solve for x
    x = 8,436,546,192.30/105,623.76
  6. Step 6: Final answer
    x = 79,873.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.