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Finding the Fourth Proportional to 76,930.60, 115,410.86 and 29,542.21

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Solution

The fourth proportional to 76,930.60, 115,410.86 and 29,542.21 is: 44,319.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,930.60 : 115,410.86 = 29,542.21 : x
  2. Step 2: Convert to fraction form
    76,930.60/115,410.86 = 29,542.21/x
  3. Step 3: Cross multiply
    76,930.60x = 115,410.86 × 29,542.21
  4. Step 4: Simplify right side
    76,930.60x = 3,409,492,182.88
  5. Step 5: Solve for x
    x = 3,409,492,182.88/76,930.60
  6. Step 6: Final answer
    x = 44,319.06

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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.