Home / 87,868.63-131,801.67-21,309.31

Finding the Fourth Proportional to 87,868.63, 131,801.67 and 21,309.31

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Solution

The fourth proportional to 87,868.63, 131,801.67 and 21,309.31 is: 31,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,868.63 : 131,801.67 = 21,309.31 : x
  2. Step 2: Convert to fraction form
    87,868.63/131,801.67 = 21,309.31/x
  3. Step 3: Cross multiply
    87,868.63x = 131,801.67 × 21,309.31
  4. Step 4: Simplify right side
    87,868.63x = 2,808,602,644.55
  5. Step 5: Solve for x
    x = 2,808,602,644.55/87,868.63
  6. Step 6: Final answer
    x = 31,963.66

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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.