Home / 76,823.60-115,408.20-53,495.60

Finding the Fourth Proportional to 76,823.60, 115,408.20 and 53,495.60

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Solution

The fourth proportional to 76,823.60, 115,408.20 and 53,495.60 is: 80,363.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,823.60 : 115,408.20 = 53,495.60 : x
  2. Step 2: Convert to fraction form
    76,823.60/115,408.20 = 53,495.60/x
  3. Step 3: Cross multiply
    76,823.60x = 115,408.20 × 53,495.60
  4. Step 4: Simplify right side
    76,823.60x = 6,173,830,903.92
  5. Step 5: Solve for x
    x = 6,173,830,903.92/76,823.60
  6. Step 6: Final answer
    x = 80,363.73

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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.