Home / 76,690.08-115,049.64-29,940

Finding the Fourth Proportional to 76,690.08, 115,049.64 and 29,940

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Solution

The fourth proportional to 76,690.08, 115,049.64 and 29,940 is: 44,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,690.08 : 115,049.64 = 29,940 : x
  2. Step 2: Convert to fraction form
    76,690.08/115,049.64 = 29,940/x
  3. Step 3: Cross multiply
    76,690.08x = 115,049.64 × 29,940
  4. Step 4: Simplify right side
    76,690.08x = 3,444,586,221.60
  5. Step 5: Solve for x
    x = 3,444,586,221.60/76,690.08
  6. Step 6: Final answer
    x = 44,915.67

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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.