Home / 76,129.11-114,158.61-31,729.35

Finding the Fourth Proportional to 76,129.11, 114,158.61 and 31,729.35

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Solution

The fourth proportional to 76,129.11, 114,158.61 and 31,729.35 is: 47,579.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,129.11 : 114,158.61 = 31,729.35 : x
  2. Step 2: Convert to fraction form
    76,129.11/114,158.61 = 31,729.35/x
  3. Step 3: Cross multiply
    76,129.11x = 114,158.61 × 31,729.35
  4. Step 4: Simplify right side
    76,129.11x = 3,622,178,492.20
  5. Step 5: Solve for x
    x = 3,622,178,492.20/76,129.11
  6. Step 6: Final answer
    x = 47,579.41

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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.