Home / 75,078.45-112,458.11-60,972.30

Finding the Fourth Proportional to 75,078.45, 112,458.11 and 60,972.30

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Solution

The fourth proportional to 75,078.45, 112,458.11 and 60,972.30 is: 91,328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,078.45 : 112,458.11 = 60,972.30 : x
  2. Step 2: Convert to fraction form
    75,078.45/112,458.11 = 60,972.30/x
  3. Step 3: Cross multiply
    75,078.45x = 112,458.11 × 60,972.30
  4. Step 4: Simplify right side
    75,078.45x = 6,856,829,315.49
  5. Step 5: Solve for x
    x = 6,856,829,315.49/75,078.45
  6. Step 6: Final answer
    x = 91,328.86

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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.