Home / 80,657.41-121,010.73-41,242.21

Finding the Fourth Proportional to 80,657.41, 121,010.73 and 41,242.21

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Solution

The fourth proportional to 80,657.41, 121,010.73 and 41,242.21 is: 61,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657.41 : 121,010.73 = 41,242.21 : x
  2. Step 2: Convert to fraction form
    80,657.41/121,010.73 = 41,242.21/x
  3. Step 3: Cross multiply
    80,657.41x = 121,010.73 × 41,242.21
  4. Step 4: Simplify right side
    80,657.41x = 4,990,749,938.91
  5. Step 5: Solve for x
    x = 4,990,749,938.91/80,657.41
  6. Step 6: Final answer
    x = 61,875.90

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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.