Home / 76,936.40-115,280.40-43,557.20

Finding the Fourth Proportional to 76,936.40, 115,280.40 and 43,557.20

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Solution

The fourth proportional to 76,936.40, 115,280.40 and 43,557.20 is: 65,265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,936.40 : 115,280.40 = 43,557.20 : x
  2. Step 2: Convert to fraction form
    76,936.40/115,280.40 = 43,557.20/x
  3. Step 3: Cross multiply
    76,936.40x = 115,280.40 × 43,557.20
  4. Step 4: Simplify right side
    76,936.40x = 5,021,291,438.88
  5. Step 5: Solve for x
    x = 5,021,291,438.88/76,936.40
  6. Step 6: Final answer
    x = 65,265.48

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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.