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Finding the Fourth Proportional to 71,000.55, 97,910.78 and 55,079.19

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Solution

The fourth proportional to 71,000.55, 97,910.78 and 55,079.19 is: 75,954.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,000.55 : 97,910.78 = 55,079.19 : x
  2. Step 2: Convert to fraction form
    71,000.55/97,910.78 = 55,079.19/x
  3. Step 3: Cross multiply
    71,000.55x = 97,910.78 × 55,079.19
  4. Step 4: Simplify right side
    71,000.55x = 5,392,846,179.27
  5. Step 5: Solve for x
    x = 5,392,846,179.27/71,000.55
  6. Step 6: Final answer
    x = 75,954.99

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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.