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Finding the Fourth Proportional to 76,690.30, 114,967.05 and 29,932.30

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Solution

The fourth proportional to 76,690.30, 114,967.05 and 29,932.30 is: 44,871.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,690.30 : 114,967.05 = 29,932.30 : x
  2. Step 2: Convert to fraction form
    76,690.30/114,967.05 = 29,932.30/x
  3. Step 3: Cross multiply
    76,690.30x = 114,967.05 × 29,932.30
  4. Step 4: Simplify right side
    76,690.30x = 3,441,228,230.72
  5. Step 5: Solve for x
    x = 3,441,228,230.72/76,690.30
  6. Step 6: Final answer
    x = 44,871.75

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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.