Home / 40,980.50-61,485.34-20,218.58

Finding the Fourth Proportional to 40,980.50, 61,485.34 and 20,218.58

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Solution

The fourth proportional to 40,980.50, 61,485.34 and 20,218.58 is: 30,335.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,980.50 : 61,485.34 = 20,218.58 : x
  2. Step 2: Convert to fraction form
    40,980.50/61,485.34 = 20,218.58/x
  3. Step 3: Cross multiply
    40,980.50x = 61,485.34 × 20,218.58
  4. Step 4: Simplify right side
    40,980.50x = 1,243,146,265.62
  5. Step 5: Solve for x
    x = 1,243,146,265.62/40,980.50
  6. Step 6: Final answer
    x = 30,335.07

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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.