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Finding the Fourth Proportional to 71,011.63, 106,415.92 and 52,143.63

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Solution

The fourth proportional to 71,011.63, 106,415.92 and 52,143.63 is: 78,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,011.63 : 106,415.92 = 52,143.63 : x
  2. Step 2: Convert to fraction form
    71,011.63/106,415.92 = 52,143.63/x
  3. Step 3: Cross multiply
    71,011.63x = 106,415.92 × 52,143.63
  4. Step 4: Simplify right side
    71,011.63x = 5,548,912,358.59
  5. Step 5: Solve for x
    x = 5,548,912,358.59/71,011.63
  6. Step 6: Final answer
    x = 78,140.90

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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.