Home / 76,996.12-106,247.72-42,999.89

Finding the Fourth Proportional to 76,996.12, 106,247.72 and 42,999.89

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Solution

The fourth proportional to 76,996.12, 106,247.72 and 42,999.89 is: 59,335.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,996.12 : 106,247.72 = 42,999.89 : x
  2. Step 2: Convert to fraction form
    76,996.12/106,247.72 = 42,999.89/x
  3. Step 3: Cross multiply
    76,996.12x = 106,247.72 × 42,999.89
  4. Step 4: Simplify right side
    76,996.12x = 4,568,640,272.75
  5. Step 5: Solve for x
    x = 4,568,640,272.75/76,996.12
  6. Step 6: Final answer
    x = 59,335.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.