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Finding the Fourth Proportional to 90,115.93, 134,977.02 and 45,666.37

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Solution

The fourth proportional to 90,115.93, 134,977.02 and 45,666.37 is: 68,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,115.93 : 134,977.02 = 45,666.37 : x
  2. Step 2: Convert to fraction form
    90,115.93/134,977.02 = 45,666.37/x
  3. Step 3: Cross multiply
    90,115.93x = 134,977.02 × 45,666.37
  4. Step 4: Simplify right side
    90,115.93x = 6,163,910,536.82
  5. Step 5: Solve for x
    x = 6,163,910,536.82/90,115.93
  6. Step 6: Final answer
    x = 68,399.79

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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.