Home / 84,140.10-126,173.23-31,512.67

Finding the Fourth Proportional to 84,140.10, 126,173.23 and 31,512.67

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Solution

The fourth proportional to 84,140.10, 126,173.23 and 31,512.67 is: 47,255.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,140.10 : 126,173.23 = 31,512.67 : x
  2. Step 2: Convert to fraction form
    84,140.10/126,173.23 = 31,512.67/x
  3. Step 3: Cross multiply
    84,140.10x = 126,173.23 × 31,512.67
  4. Step 4: Simplify right side
    84,140.10x = 3,976,054,965.61
  5. Step 5: Solve for x
    x = 3,976,054,965.61/84,140.10
  6. Step 6: Final answer
    x = 47,255.17

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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.