Home / 87,701.64-131,571.90-40,929

Finding the Fourth Proportional to 87,701.64, 131,571.90 and 40,929

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Solution

The fourth proportional to 87,701.64, 131,571.90 and 40,929 is: 61,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,701.64 : 131,571.90 = 40,929 : x
  2. Step 2: Convert to fraction form
    87,701.64/131,571.90 = 40,929/x
  3. Step 3: Cross multiply
    87,701.64x = 131,571.90 × 40,929
  4. Step 4: Simplify right side
    87,701.64x = 5,385,106,295.10
  5. Step 5: Solve for x
    x = 5,385,106,295.10/87,701.64
  6. Step 6: Final answer
    x = 61,402.57

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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.