Home / 76,438.90-114,561.15-68,079.70

Finding the Fourth Proportional to 76,438.90, 114,561.15 and 68,079.70

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Solution

The fourth proportional to 76,438.90, 114,561.15 and 68,079.70 is: 102,032.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,438.90 : 114,561.15 = 68,079.70 : x
  2. Step 2: Convert to fraction form
    76,438.90/114,561.15 = 68,079.70/x
  3. Step 3: Cross multiply
    76,438.90x = 114,561.15 × 68,079.70
  4. Step 4: Simplify right side
    76,438.90x = 7,799,288,723.66
  5. Step 5: Solve for x
    x = 7,799,288,723.66/76,438.90
  6. Step 6: Final answer
    x = 102,032.98

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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.