Home / 87,679.72-131,804.70-70,339.24

Finding the Fourth Proportional to 87,679.72, 131,804.70 and 70,339.24

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Solution

The fourth proportional to 87,679.72, 131,804.70 and 70,339.24 is: 105,737.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,679.72 : 131,804.70 = 70,339.24 : x
  2. Step 2: Convert to fraction form
    87,679.72/131,804.70 = 70,339.24/x
  3. Step 3: Cross multiply
    87,679.72x = 131,804.70 × 70,339.24
  4. Step 4: Simplify right side
    87,679.72x = 9,271,042,426.43
  5. Step 5: Solve for x
    x = 9,271,042,426.43/87,679.72
  6. Step 6: Final answer
    x = 105,737.59

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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.