Home / 87,682.30-131,437.05-43,315.90

Finding the Fourth Proportional to 87,682.30, 131,437.05 and 43,315.90

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Solution

The fourth proportional to 87,682.30, 131,437.05 and 43,315.90 is: 64,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682.30 : 131,437.05 = 43,315.90 : x
  2. Step 2: Convert to fraction form
    87,682.30/131,437.05 = 43,315.90/x
  3. Step 3: Cross multiply
    87,682.30x = 131,437.05 × 43,315.90
  4. Step 4: Simplify right side
    87,682.30x = 5,693,314,114.10
  5. Step 5: Solve for x
    x = 5,693,314,114.10/87,682.30
  6. Step 6: Final answer
    x = 64,931.17

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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.