Home / 76,691.55-114,421.31-68,271.60

Finding the Fourth Proportional to 76,691.55, 114,421.31 and 68,271.60

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Solution

The fourth proportional to 76,691.55, 114,421.31 and 68,271.60 is: 101,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,691.55 : 114,421.31 = 68,271.60 : x
  2. Step 2: Convert to fraction form
    76,691.55/114,421.31 = 68,271.60/x
  3. Step 3: Cross multiply
    76,691.55x = 114,421.31 × 68,271.60
  4. Step 4: Simplify right side
    76,691.55x = 7,811,726,078.48
  5. Step 5: Solve for x
    x = 7,811,726,078.48/76,691.55
  6. Step 6: Final answer
    x = 101,859.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.