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Finding the Fourth Proportional to 83,370.80, 115,040.76 and 51,119.84

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Solution

The fourth proportional to 83,370.80, 115,040.76 and 51,119.84 is: 70,538.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,370.80 : 115,040.76 = 51,119.84 : x
  2. Step 2: Convert to fraction form
    83,370.80/115,040.76 = 51,119.84/x
  3. Step 3: Cross multiply
    83,370.80x = 115,040.76 × 51,119.84
  4. Step 4: Simplify right side
    83,370.80x = 5,880,865,244.68
  5. Step 5: Solve for x
    x = 5,880,865,244.68/83,370.80
  6. Step 6: Final answer
    x = 70,538.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.