Home / 82,405.67-123,481.28-55,646.80

Finding the Fourth Proportional to 82,405.67, 123,481.28 and 55,646.80

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Solution

The fourth proportional to 82,405.67, 123,481.28 and 55,646.80 is: 83,384.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,405.67 : 123,481.28 = 55,646.80 : x
  2. Step 2: Convert to fraction form
    82,405.67/123,481.28 = 55,646.80/x
  3. Step 3: Cross multiply
    82,405.67x = 123,481.28 × 55,646.80
  4. Step 4: Simplify right side
    82,405.67x = 6,871,337,474.50
  5. Step 5: Solve for x
    x = 6,871,337,474.50/82,405.67
  6. Step 6: Final answer
    x = 83,384.28

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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.