Home / 76,977.40-115,572.20-53,226.60

Finding the Fourth Proportional to 76,977.40, 115,572.20 and 53,226.60

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Solution

The fourth proportional to 76,977.40, 115,572.20 and 53,226.60 is: 79,913.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,977.40 : 115,572.20 = 53,226.60 : x
  2. Step 2: Convert to fraction form
    76,977.40/115,572.20 = 53,226.60/x
  3. Step 3: Cross multiply
    76,977.40x = 115,572.20 × 53,226.60
  4. Step 4: Simplify right side
    76,977.40x = 6,151,515,260.52
  5. Step 5: Solve for x
    x = 6,151,515,260.52/76,977.40
  6. Step 6: Final answer
    x = 79,913.26

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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.