Home / 55,789.80-76,990.46-30,639.30

Finding the Fourth Proportional to 55,789.80, 76,990.46 and 30,639.30

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Solution

The fourth proportional to 55,789.80, 76,990.46 and 30,639.30 is: 42,282.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,789.80 : 76,990.46 = 30,639.30 : x
  2. Step 2: Convert to fraction form
    55,789.80/76,990.46 = 30,639.30/x
  3. Step 3: Cross multiply
    55,789.80x = 76,990.46 × 30,639.30
  4. Step 4: Simplify right side
    55,789.80x = 2,358,933,801.08
  5. Step 5: Solve for x
    x = 2,358,933,801.08/55,789.80
  6. Step 6: Final answer
    x = 42,282.53

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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.