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Finding the Fourth Proportional to 80,577.72, 120,866.58 and 30,646.28

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Solution

The fourth proportional to 80,577.72, 120,866.58 and 30,646.28 is: 45,969.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,577.72 : 120,866.58 = 30,646.28 : x
  2. Step 2: Convert to fraction form
    80,577.72/120,866.58 = 30,646.28/x
  3. Step 3: Cross multiply
    80,577.72x = 120,866.58 × 30,646.28
  4. Step 4: Simplify right side
    80,577.72x = 3,704,111,355.49
  5. Step 5: Solve for x
    x = 3,704,111,355.49/80,577.72
  6. Step 6: Final answer
    x = 45,969.42

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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.