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Finding the Fourth Proportional to 72,354.71, 107,890.46 and 67,528.73

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Solution

The fourth proportional to 72,354.71, 107,890.46 and 67,528.73 is: 100,694.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,354.71 : 107,890.46 = 67,528.73 : x
  2. Step 2: Convert to fraction form
    72,354.71/107,890.46 = 67,528.73/x
  3. Step 3: Cross multiply
    72,354.71x = 107,890.46 × 67,528.73
  4. Step 4: Simplify right side
    72,354.71x = 7,285,705,742.92
  5. Step 5: Solve for x
    x = 7,285,705,742.92/72,354.71
  6. Step 6: Final answer
    x = 100,694.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.