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Finding the Fourth Proportional to 101,487.40, 152,064.90 and 54,052.15

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Solution

The fourth proportional to 101,487.40, 152,064.90 and 54,052.15 is: 80,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,487.40 : 152,064.90 = 54,052.15 : x
  2. Step 2: Convert to fraction form
    101,487.40/152,064.90 = 54,052.15/x
  3. Step 3: Cross multiply
    101,487.40x = 152,064.90 × 54,052.15
  4. Step 4: Simplify right side
    101,487.40x = 8,219,434,784.54
  5. Step 5: Solve for x
    x = 8,219,434,784.54/101,487.40
  6. Step 6: Final answer
    x = 80,989.71

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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.