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Finding the Fourth Proportional to 51,491.76, 71,059.70 and 29,135.76

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Solution

The fourth proportional to 51,491.76, 71,059.70 and 29,135.76 is: 40,207.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,491.76 : 71,059.70 = 29,135.76 : x
  2. Step 2: Convert to fraction form
    51,491.76/71,059.70 = 29,135.76/x
  3. Step 3: Cross multiply
    51,491.76x = 71,059.70 × 29,135.76
  4. Step 4: Simplify right side
    51,491.76x = 2,070,378,364.87
  5. Step 5: Solve for x
    x = 2,070,378,364.87/51,491.76
  6. Step 6: Final answer
    x = 40,207.95

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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.