Home / 49,990.60-68,989.12-28,769.92

Finding the Fourth Proportional to 49,990.60, 68,989.12 and 28,769.92

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Solution

The fourth proportional to 49,990.60, 68,989.12 and 28,769.92 is: 39,703.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,990.60 : 68,989.12 = 28,769.92 : x
  2. Step 2: Convert to fraction form
    49,990.60/68,989.12 = 28,769.92/x
  3. Step 3: Cross multiply
    49,990.60x = 68,989.12 × 28,769.92
  4. Step 4: Simplify right side
    49,990.60x = 1,984,811,463.27
  5. Step 5: Solve for x
    x = 1,984,811,463.27/49,990.60
  6. Step 6: Final answer
    x = 39,703.69

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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.