Home / 76,986.10-115,421.55-41,965.30

Finding the Fourth Proportional to 76,986.10, 115,421.55 and 41,965.30

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Solution

The fourth proportional to 76,986.10, 115,421.55 and 41,965.30 is: 62,916.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,986.10 : 115,421.55 = 41,965.30 : x
  2. Step 2: Convert to fraction form
    76,986.10/115,421.55 = 41,965.30/x
  3. Step 3: Cross multiply
    76,986.10x = 115,421.55 × 41,965.30
  4. Step 4: Simplify right side
    76,986.10x = 4,843,699,972.22
  5. Step 5: Solve for x
    x = 4,843,699,972.22/76,986.10
  6. Step 6: Final answer
    x = 62,916.55

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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.