Home / 84,231.68-126,320.28-28,056.77

Finding the Fourth Proportional to 84,231.68, 126,320.28 and 28,056.77

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Solution

The fourth proportional to 84,231.68, 126,320.28 and 28,056.77 is: 42,076.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,231.68 : 126,320.28 = 28,056.77 : x
  2. Step 2: Convert to fraction form
    84,231.68/126,320.28 = 28,056.77/x
  3. Step 3: Cross multiply
    84,231.68x = 126,320.28 × 28,056.77
  4. Step 4: Simplify right side
    84,231.68x = 3,544,139,042.30
  5. Step 5: Solve for x
    x = 3,544,139,042.30/84,231.68
  6. Step 6: Final answer
    x = 42,076.08

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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.