Home / 82,431.30-123,646.95-20,101.80

Finding the Fourth Proportional to 82,431.30, 123,646.95 and 20,101.80

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Solution

The fourth proportional to 82,431.30, 123,646.95 and 20,101.80 is: 30,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,431.30 : 123,646.95 = 20,101.80 : x
  2. Step 2: Convert to fraction form
    82,431.30/123,646.95 = 20,101.80/x
  3. Step 3: Cross multiply
    82,431.30x = 123,646.95 × 20,101.80
  4. Step 4: Simplify right side
    82,431.30x = 2,485,526,259.51
  5. Step 5: Solve for x
    x = 2,485,526,259.51/82,431.30
  6. Step 6: Final answer
    x = 30,152.70

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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.