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Finding the Fourth Proportional to 90,500.90, 135,804.28 and 37,905.98

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Solution

The fourth proportional to 90,500.90, 135,804.28 and 37,905.98 is: 56,881.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,500.90 : 135,804.28 = 37,905.98 : x
  2. Step 2: Convert to fraction form
    90,500.90/135,804.28 = 37,905.98/x
  3. Step 3: Cross multiply
    90,500.90x = 135,804.28 × 37,905.98
  4. Step 4: Simplify right side
    90,500.90x = 5,147,794,321.59
  5. Step 5: Solve for x
    x = 5,147,794,321.59/90,500.90
  6. Step 6: Final answer
    x = 56,881.14

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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.