Home / 84,220.80-126,257.76-31,616.16

Finding the Fourth Proportional to 84,220.80, 126,257.76 and 31,616.16

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Solution

The fourth proportional to 84,220.80, 126,257.76 and 31,616.16 is: 47,396.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,220.80 : 126,257.76 = 31,616.16 : x
  2. Step 2: Convert to fraction form
    84,220.80/126,257.76 = 31,616.16/x
  3. Step 3: Cross multiply
    84,220.80x = 126,257.76 × 31,616.16
  4. Step 4: Simplify right side
    84,220.80x = 3,991,785,541.40
  5. Step 5: Solve for x
    x = 3,991,785,541.40/84,220.80
  6. Step 6: Final answer
    x = 47,396.67

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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.