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Finding the Fourth Proportional to 70,103.80, 104,925.30 and 54,436.60

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Solution

The fourth proportional to 70,103.80, 104,925.30 and 54,436.60 is: 81,475.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,103.80 : 104,925.30 = 54,436.60 : x
  2. Step 2: Convert to fraction form
    70,103.80/104,925.30 = 54,436.60/x
  3. Step 3: Cross multiply
    70,103.80x = 104,925.30 × 54,436.60
  4. Step 4: Simplify right side
    70,103.80x = 5,711,776,585.98
  5. Step 5: Solve for x
    x = 5,711,776,585.98/70,103.80
  6. Step 6: Final answer
    x = 81,475.99

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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.