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Finding the Fourth Proportional to 65,393.80, 90,229.08 and 41,511.76

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Solution

The fourth proportional to 65,393.80, 90,229.08 and 41,511.76 is: 57,277.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,393.80 : 90,229.08 = 41,511.76 : x
  2. Step 2: Convert to fraction form
    65,393.80/90,229.08 = 41,511.76/x
  3. Step 3: Cross multiply
    65,393.80x = 90,229.08 × 41,511.76
  4. Step 4: Simplify right side
    65,393.80x = 3,745,567,913.98
  5. Step 5: Solve for x
    x = 3,745,567,913.98/65,393.80
  6. Step 6: Final answer
    x = 57,277.11

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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.