Home / 82,021.81-112,451.87-80,527.14

Finding the Fourth Proportional to 82,021.81, 112,451.87 and 80,527.14

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Solution

The fourth proportional to 82,021.81, 112,451.87 and 80,527.14 is: 110,402.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,021.81 : 112,451.87 = 80,527.14 : x
  2. Step 2: Convert to fraction form
    82,021.81/112,451.87 = 80,527.14/x
  3. Step 3: Cross multiply
    82,021.81x = 112,451.87 × 80,527.14
  4. Step 4: Simplify right side
    82,021.81x = 9,055,427,478.75
  5. Step 5: Solve for x
    x = 9,055,427,478.75/82,021.81
  6. Step 6: Final answer
    x = 110,402.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.