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Finding the Fourth Proportional to 77,463.50, 115,902.02 and 45,890.51

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Solution

The fourth proportional to 77,463.50, 115,902.02 and 45,890.51 is: 68,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,463.50 : 115,902.02 = 45,890.51 : x
  2. Step 2: Convert to fraction form
    77,463.50/115,902.02 = 45,890.51/x
  3. Step 3: Cross multiply
    77,463.50x = 115,902.02 × 45,890.51
  4. Step 4: Simplify right side
    77,463.50x = 5,318,802,343.05
  5. Step 5: Solve for x
    x = 5,318,802,343.05/77,463.50
  6. Step 6: Final answer
    x = 68,662.05

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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.