Home / 84,255.42-126,285.93-31,631.34

Finding the Fourth Proportional to 84,255.42, 126,285.93 and 31,631.34

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Solution

The fourth proportional to 84,255.42, 126,285.93 and 31,631.34 is: 47,410.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,255.42 : 126,285.93 = 31,631.34 : x
  2. Step 2: Convert to fraction form
    84,255.42/126,285.93 = 31,631.34/x
  3. Step 3: Cross multiply
    84,255.42x = 126,285.93 × 31,631.34
  4. Step 4: Simplify right side
    84,255.42x = 3,994,593,189.05
  5. Step 5: Solve for x
    x = 3,994,593,189.05/84,255.42
  6. Step 6: Final answer
    x = 47,410.52

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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.