Home / 87,515.28-120,706.62-66,005.94

Finding the Fourth Proportional to 87,515.28, 120,706.62 and 66,005.94

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Solution

The fourth proportional to 87,515.28, 120,706.62 and 66,005.94 is: 91,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,515.28 : 120,706.62 = 66,005.94 : x
  2. Step 2: Convert to fraction form
    87,515.28/120,706.62 = 66,005.94/x
  3. Step 3: Cross multiply
    87,515.28x = 120,706.62 × 66,005.94
  4. Step 4: Simplify right side
    87,515.28x = 7,967,353,917.32
  5. Step 5: Solve for x
    x = 7,967,353,917.32/87,515.28
  6. Step 6: Final answer
    x = 91,039.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.