Home / 76,977.60-115,442.40-30,244.80

Finding the Fourth Proportional to 76,977.60, 115,442.40 and 30,244.80

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Solution

The fourth proportional to 76,977.60, 115,442.40 and 30,244.80 is: 45,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,977.60 : 115,442.40 = 30,244.80 : x
  2. Step 2: Convert to fraction form
    76,977.60/115,442.40 = 30,244.80/x
  3. Step 3: Cross multiply
    76,977.60x = 115,442.40 × 30,244.80
  4. Step 4: Simplify right side
    76,977.60x = 3,491,532,299.52
  5. Step 5: Solve for x
    x = 3,491,532,299.52/76,977.60
  6. Step 6: Final answer
    x = 45,357.77

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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.