Home / 76,988.38-115,520.88-43,233.46

Finding the Fourth Proportional to 76,988.38, 115,520.88 and 43,233.46

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Solution

The fourth proportional to 76,988.38, 115,520.88 and 43,233.46 is: 64,871.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,988.38 : 115,520.88 = 43,233.46 : x
  2. Step 2: Convert to fraction form
    76,988.38/115,520.88 = 43,233.46/x
  3. Step 3: Cross multiply
    76,988.38x = 115,520.88 × 43,233.46
  4. Step 4: Simplify right side
    76,988.38x = 4,994,367,344.64
  5. Step 5: Solve for x
    x = 4,994,367,344.64/76,988.38
  6. Step 6: Final answer
    x = 64,871.70

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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.