Home / 87,630.70-131,446.05-72,856.30

Finding the Fourth Proportional to 87,630.70, 131,446.05 and 72,856.30

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Solution

The fourth proportional to 87,630.70, 131,446.05 and 72,856.30 is: 109,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,630.70 : 131,446.05 = 72,856.30 : x
  2. Step 2: Convert to fraction form
    87,630.70/131,446.05 = 72,856.30/x
  3. Step 3: Cross multiply
    87,630.70x = 131,446.05 × 72,856.30
  4. Step 4: Simplify right side
    87,630.70x = 9,576,672,852.62
  5. Step 5: Solve for x
    x = 9,576,672,852.62/87,630.70
  6. Step 6: Final answer
    x = 109,284.45

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1.5x scale

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.