Home / 102,905.52-142,004.79-57,589.26

Finding the Fourth Proportional to 102,905.52, 142,004.79 and 57,589.26

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Solution

The fourth proportional to 102,905.52, 142,004.79 and 57,589.26 is: 79,470.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,905.52 : 142,004.79 = 57,589.26 : x
  2. Step 2: Convert to fraction form
    102,905.52/142,004.79 = 57,589.26/x
  3. Step 3: Cross multiply
    102,905.52x = 142,004.79 × 57,589.26
  4. Step 4: Simplify right side
    102,905.52x = 8,177,950,772.56
  5. Step 5: Solve for x
    x = 8,177,950,772.56/102,905.52
  6. Step 6: Final answer
    x = 79,470.48

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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.