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Finding the Fourth Proportional to 71,994.76, 99,354.68 and 40,169.84

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Solution

The fourth proportional to 71,994.76, 99,354.68 and 40,169.84 is: 55,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,994.76 : 99,354.68 = 40,169.84 : x
  2. Step 2: Convert to fraction form
    71,994.76/99,354.68 = 40,169.84/x
  3. Step 3: Cross multiply
    71,994.76x = 99,354.68 × 40,169.84
  4. Step 4: Simplify right side
    71,994.76x = 3,991,061,598.85
  5. Step 5: Solve for x
    x = 3,991,061,598.85/71,994.76
  6. Step 6: Final answer
    x = 55,435.45

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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.