Home / 84,222.80-126,260.76-31,618.16

Finding the Fourth Proportional to 84,222.80, 126,260.76 and 31,618.16

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Solution

The fourth proportional to 84,222.80, 126,260.76 and 31,618.16 is: 47,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,222.80 : 126,260.76 = 31,618.16 : x
  2. Step 2: Convert to fraction form
    84,222.80/126,260.76 = 31,618.16/x
  3. Step 3: Cross multiply
    84,222.80x = 126,260.76 × 31,618.16
  4. Step 4: Simplify right side
    84,222.80x = 3,992,132,911.40
  5. Step 5: Solve for x
    x = 3,992,132,911.40/84,222.80
  6. Step 6: Final answer
    x = 47,399.67

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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.