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Finding the Fourth Proportional to 86,942.70, 130,325.84 and 49,425.26

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Solution

The fourth proportional to 86,942.70, 130,325.84 and 49,425.26 is: 74,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,942.70 : 130,325.84 = 49,425.26 : x
  2. Step 2: Convert to fraction form
    86,942.70/130,325.84 = 49,425.26/x
  3. Step 3: Cross multiply
    86,942.70x = 130,325.84 × 49,425.26
  4. Step 4: Simplify right side
    86,942.70x = 6,441,388,526.72
  5. Step 5: Solve for x
    x = 6,441,388,526.72/86,942.70
  6. Step 6: Final answer
    x = 74,087.74

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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.