Home / 82,485.48-113,771.20-75,701.40

Finding the Fourth Proportional to 82,485.48, 113,771.20 and 75,701.40

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Solution

The fourth proportional to 82,485.48, 113,771.20 and 75,701.40 is: 104,414.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,485.48 : 113,771.20 = 75,701.40 : x
  2. Step 2: Convert to fraction form
    82,485.48/113,771.20 = 75,701.40/x
  3. Step 3: Cross multiply
    82,485.48x = 113,771.20 × 75,701.40
  4. Step 4: Simplify right side
    82,485.48x = 8,612,639,119.68
  5. Step 5: Solve for x
    x = 8,612,639,119.68/82,485.48
  6. Step 6: Final answer
    x = 104,414.00

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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.