Home / 76,968.99-106,189.11-45,131.72

Finding the Fourth Proportional to 76,968.99, 106,189.11 and 45,131.72

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Solution

The fourth proportional to 76,968.99, 106,189.11 and 45,131.72 is: 62,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,968.99 : 106,189.11 = 45,131.72 : x
  2. Step 2: Convert to fraction form
    76,968.99/106,189.11 = 45,131.72/x
  3. Step 3: Cross multiply
    76,968.99x = 106,189.11 × 45,131.72
  4. Step 4: Simplify right side
    76,968.99x = 4,792,496,648.62
  5. Step 5: Solve for x
    x = 4,792,496,648.62/76,968.99
  6. Step 6: Final answer
    x = 62,265.29

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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.