Home / 79,125.12-109,090.80-50,820.48

Finding the Fourth Proportional to 79,125.12, 109,090.80 and 50,820.48

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Solution

The fourth proportional to 79,125.12, 109,090.80 and 50,820.48 is: 70,066.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,125.12 : 109,090.80 = 50,820.48 : x
  2. Step 2: Convert to fraction form
    79,125.12/109,090.80 = 50,820.48/x
  3. Step 3: Cross multiply
    79,125.12x = 109,090.80 × 50,820.48
  4. Step 4: Simplify right side
    79,125.12x = 5,544,046,819.58
  5. Step 5: Solve for x
    x = 5,544,046,819.58/79,125.12
  6. Step 6: Final answer
    x = 70,066.84

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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.