Home / 87,380.31-131,037.08-31,209.87

Finding the Fourth Proportional to 87,380.31, 131,037.08 and 31,209.87

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Solution

The fourth proportional to 87,380.31, 131,037.08 and 31,209.87 is: 46,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,380.31 : 131,037.08 = 31,209.87 : x
  2. Step 2: Convert to fraction form
    87,380.31/131,037.08 = 31,209.87/x
  3. Step 3: Cross multiply
    87,380.31x = 131,037.08 × 31,209.87
  4. Step 4: Simplify right side
    87,380.31x = 4,089,650,075.93
  5. Step 5: Solve for x
    x = 4,089,650,075.93/87,380.31
  6. Step 6: Final answer
    x = 46,802.88

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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.