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Finding the Fourth Proportional to 76,578.80, 114,821.16 and 29,777.12

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Solution

The fourth proportional to 76,578.80, 114,821.16 and 29,777.12 is: 44,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,578.80 : 114,821.16 = 29,777.12 : x
  2. Step 2: Convert to fraction form
    76,578.80/114,821.16 = 29,777.12/x
  3. Step 3: Cross multiply
    76,578.80x = 114,821.16 × 29,777.12
  4. Step 4: Simplify right side
    76,578.80x = 3,419,043,459.86
  5. Step 5: Solve for x
    x = 3,419,043,459.86/76,578.80
  6. Step 6: Final answer
    x = 44,647.39

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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.