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Finding the Fourth Proportional to 90,782.37, 136,097.01 and 43,370.64

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Solution

The fourth proportional to 90,782.37, 136,097.01 and 43,370.64 is: 65,019.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782.37 : 136,097.01 = 43,370.64 : x
  2. Step 2: Convert to fraction form
    90,782.37/136,097.01 = 43,370.64/x
  3. Step 3: Cross multiply
    90,782.37x = 136,097.01 × 43,370.64
  4. Step 4: Simplify right side
    90,782.37x = 5,902,614,425.79
  5. Step 5: Solve for x
    x = 5,902,614,425.79/90,782.37
  6. Step 6: Final answer
    x = 65,019.39

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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.