Home / 84,215.88-126,306.42-31,624.20

Finding the Fourth Proportional to 84,215.88, 126,306.42 and 31,624.20

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Solution

The fourth proportional to 84,215.88, 126,306.42 and 31,624.20 is: 47,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,215.88 : 126,306.42 = 31,624.20 : x
  2. Step 2: Convert to fraction form
    84,215.88/126,306.42 = 31,624.20/x
  3. Step 3: Cross multiply
    84,215.88x = 126,306.42 × 31,624.20
  4. Step 4: Simplify right side
    84,215.88x = 3,994,339,487.36
  5. Step 5: Solve for x
    x = 3,994,339,487.36/84,215.88
  6. Step 6: Final answer
    x = 47,429.77

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1.5x scale

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.