Home / 55,140.40-82,732.20-21,854.80

Finding the Fourth Proportional to 55,140.40, 82,732.20 and 21,854.80

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Solution

The fourth proportional to 55,140.40, 82,732.20 and 21,854.80 is: 32,790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,140.40 : 82,732.20 = 21,854.80 : x
  2. Step 2: Convert to fraction form
    55,140.40/82,732.20 = 21,854.80/x
  3. Step 3: Cross multiply
    55,140.40x = 82,732.20 × 21,854.80
  4. Step 4: Simplify right side
    55,140.40x = 1,808,095,684.56
  5. Step 5: Solve for x
    x = 1,808,095,684.56/55,140.40
  6. Step 6: Final answer
    x = 32,790.76

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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.