Home / 76,606.40-115,003.20-43,349.60

Finding the Fourth Proportional to 76,606.40, 115,003.20 and 43,349.60

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Solution

The fourth proportional to 76,606.40, 115,003.20 and 43,349.60 is: 65,077.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,606.40 : 115,003.20 = 43,349.60 : x
  2. Step 2: Convert to fraction form
    76,606.40/115,003.20 = 43,349.60/x
  3. Step 3: Cross multiply
    76,606.40x = 115,003.20 × 43,349.60
  4. Step 4: Simplify right side
    76,606.40x = 4,985,342,718.72
  5. Step 5: Solve for x
    x = 4,985,342,718.72/76,606.40
  6. Step 6: Final answer
    x = 65,077.37

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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.