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Finding the Fourth Proportional to 90,015, 134,930.34 and 37,455

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Solution

The fourth proportional to 90,015, 134,930.34 and 37,455 is: 56,144.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015 : 134,930.34 = 37,455 : x
  2. Step 2: Convert to fraction form
    90,015/134,930.34 = 37,455/x
  3. Step 3: Cross multiply
    90,015x = 134,930.34 × 37,455
  4. Step 4: Simplify right side
    90,015x = 5,053,815,884.70
  5. Step 5: Solve for x
    x = 5,053,815,884.70/90,015
  6. Step 6: Final answer
    x = 56,144.15

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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.