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Finding the Fourth Proportional to 55,630.80, 83,409.30 and 30,682.80

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Solution

The fourth proportional to 55,630.80, 83,409.30 and 30,682.80 is: 46,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,630.80 : 83,409.30 = 30,682.80 : x
  2. Step 2: Convert to fraction form
    55,630.80/83,409.30 = 30,682.80/x
  3. Step 3: Cross multiply
    55,630.80x = 83,409.30 × 30,682.80
  4. Step 4: Simplify right side
    55,630.80x = 2,559,230,870.04
  5. Step 5: Solve for x
    x = 2,559,230,870.04/55,630.80
  6. Step 6: Final answer
    x = 46,003.85

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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.