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Finding the Fourth Proportional to 72,850.80, 109,206.48 and 28,462.80

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Solution

The fourth proportional to 72,850.80, 109,206.48 and 28,462.80 is: 42,666.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,850.80 : 109,206.48 = 28,462.80 : x
  2. Step 2: Convert to fraction form
    72,850.80/109,206.48 = 28,462.80/x
  3. Step 3: Cross multiply
    72,850.80x = 109,206.48 × 28,462.80
  4. Step 4: Simplify right side
    72,850.80x = 3,108,322,198.94
  5. Step 5: Solve for x
    x = 3,108,322,198.94/72,850.80
  6. Step 6: Final answer
    x = 42,666.96

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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.