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Finding the Fourth Proportional to 105,410.52, 145,467.67 and 57,663.87

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Solution

The fourth proportional to 105,410.52, 145,467.67 and 57,663.87 is: 79,576.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,410.52 : 145,467.67 = 57,663.87 : x
  2. Step 2: Convert to fraction form
    105,410.52/145,467.67 = 57,663.87/x
  3. Step 3: Cross multiply
    105,410.52x = 145,467.67 × 57,663.87
  4. Step 4: Simplify right side
    105,410.52x = 8,388,228,812.08
  5. Step 5: Solve for x
    x = 8,388,228,812.08/105,410.52
  6. Step 6: Final answer
    x = 79,576.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.