Home / 84,580.18-126,821.05-31,993.76

Finding the Fourth Proportional to 84,580.18, 126,821.05 and 31,993.76

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Solution

The fourth proportional to 84,580.18, 126,821.05 and 31,993.76 is: 47,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,580.18 : 126,821.05 = 31,993.76 : x
  2. Step 2: Convert to fraction form
    84,580.18/126,821.05 = 31,993.76/x
  3. Step 3: Cross multiply
    84,580.18x = 126,821.05 × 31,993.76
  4. Step 4: Simplify right side
    84,580.18x = 4,057,482,473.72
  5. Step 5: Solve for x
    x = 4,057,482,473.72/84,580.18
  6. Step 6: Final answer
    x = 47,972.03

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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.