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Finding the Fourth Proportional to 69,218.56, 103,827.84 and 39,615.76

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Solution

The fourth proportional to 69,218.56, 103,827.84 and 39,615.76 is: 59,423.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,218.56 : 103,827.84 = 39,615.76 : x
  2. Step 2: Convert to fraction form
    69,218.56/103,827.84 = 39,615.76/x
  3. Step 3: Cross multiply
    69,218.56x = 103,827.84 × 39,615.76
  4. Step 4: Simplify right side
    69,218.56x = 4,113,218,790.76
  5. Step 5: Solve for x
    x = 4,113,218,790.76/69,218.56
  6. Step 6: Final answer
    x = 59,423.64

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Similar ratio
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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.