Home / 84,388.17-126,507.77-31,834.56

Finding the Fourth Proportional to 84,388.17, 126,507.77 and 31,834.56

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Solution

The fourth proportional to 84,388.17, 126,507.77 and 31,834.56 is: 47,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,388.17 : 126,507.77 = 31,834.56 : x
  2. Step 2: Convert to fraction form
    84,388.17/126,507.77 = 31,834.56/x
  3. Step 3: Cross multiply
    84,388.17x = 126,507.77 × 31,834.56
  4. Step 4: Simplify right side
    84,388.17x = 4,027,319,351.63
  5. Step 5: Solve for x
    x = 4,027,319,351.63/84,388.17
  6. Step 6: Final answer
    x = 47,723.74

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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.