Home / 81,188.45-121,699.62-41,133.20

Finding the Fourth Proportional to 81,188.45, 121,699.62 and 41,133.20

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Solution

The fourth proportional to 81,188.45, 121,699.62 and 41,133.20 is: 61,657.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,188.45 : 121,699.62 = 41,133.20 : x
  2. Step 2: Convert to fraction form
    81,188.45/121,699.62 = 41,133.20/x
  3. Step 3: Cross multiply
    81,188.45x = 121,699.62 × 41,133.20
  4. Step 4: Simplify right side
    81,188.45x = 5,005,895,113.63
  5. Step 5: Solve for x
    x = 5,005,895,113.63/81,188.45
  6. Step 6: Final answer
    x = 61,657.73

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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.