Home / 87,759.72-131,924.70-70,419.24

Finding the Fourth Proportional to 87,759.72, 131,924.70 and 70,419.24

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Solution

The fourth proportional to 87,759.72, 131,924.70 and 70,419.24 is: 105,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,759.72 : 131,924.70 = 70,419.24 : x
  2. Step 2: Convert to fraction form
    87,759.72/131,924.70 = 70,419.24/x
  3. Step 3: Cross multiply
    87,759.72x = 131,924.70 × 70,419.24
  4. Step 4: Simplify right side
    87,759.72x = 9,290,037,111.23
  5. Step 5: Solve for x
    x = 9,290,037,111.23/87,759.72
  6. Step 6: Final answer
    x = 105,857.64

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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.