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Finding the Fourth Proportional to 76,811.70, 115,217.55 and 73,010.10

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Solution

The fourth proportional to 76,811.70, 115,217.55 and 73,010.10 is: 109,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,811.70 : 115,217.55 = 73,010.10 : x
  2. Step 2: Convert to fraction form
    76,811.70/115,217.55 = 73,010.10/x
  3. Step 3: Cross multiply
    76,811.70x = 115,217.55 × 73,010.10
  4. Step 4: Simplify right side
    76,811.70x = 8,412,044,847.26
  5. Step 5: Solve for x
    x = 8,412,044,847.26/76,811.70
  6. Step 6: Final answer
    x = 109,515.15

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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.