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Finding the Fourth Proportional to 69,436.80, 104,086.08 and 39,818.88

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Solution

The fourth proportional to 69,436.80, 104,086.08 and 39,818.88 is: 59,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,436.80 : 104,086.08 = 39,818.88 : x
  2. Step 2: Convert to fraction form
    69,436.80/104,086.08 = 39,818.88/x
  3. Step 3: Cross multiply
    69,436.80x = 104,086.08 × 39,818.88
  4. Step 4: Simplify right side
    69,436.80x = 4,144,591,129.19
  5. Step 5: Solve for x
    x = 4,144,591,129.19/69,436.80
  6. Step 6: Final answer
    x = 59,688.68

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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.