Home / 40,108.77-60,218.37-20,400.66

Finding the Fourth Proportional to 40,108.77, 60,218.37 and 20,400.66

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Solution

The fourth proportional to 40,108.77, 60,218.37 and 20,400.66 is: 30,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,108.77 : 60,218.37 = 20,400.66 : x
  2. Step 2: Convert to fraction form
    40,108.77/60,218.37 = 20,400.66/x
  3. Step 3: Cross multiply
    40,108.77x = 60,218.37 × 20,400.66
  4. Step 4: Simplify right side
    40,108.77x = 1,228,494,492.12
  5. Step 5: Solve for x
    x = 1,228,494,492.12/40,108.77
  6. Step 6: Final answer
    x = 30,629.07

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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.