Home / 61,777.31-85,260.20-40,290.03

Finding the Fourth Proportional to 61,777.31, 85,260.20 and 40,290.03

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Solution

The fourth proportional to 61,777.31, 85,260.20 and 40,290.03 is: 55,605.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,777.31 : 85,260.20 = 40,290.03 : x
  2. Step 2: Convert to fraction form
    61,777.31/85,260.20 = 40,290.03/x
  3. Step 3: Cross multiply
    61,777.31x = 85,260.20 × 40,290.03
  4. Step 4: Simplify right side
    61,777.31x = 3,435,135,814.36
  5. Step 5: Solve for x
    x = 3,435,135,814.36/61,777.31
  6. Step 6: Final answer
    x = 55,605.14

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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.