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Finding the Fourth Proportional to 82,743.90, 124,115.85 and 43,313.10

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Solution

The fourth proportional to 82,743.90, 124,115.85 and 43,313.10 is: 64,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,743.90 : 124,115.85 = 43,313.10 : x
  2. Step 2: Convert to fraction form
    82,743.90/124,115.85 = 43,313.10/x
  3. Step 3: Cross multiply
    82,743.90x = 124,115.85 × 43,313.10
  4. Step 4: Simplify right side
    82,743.90x = 5,375,842,222.64
  5. Step 5: Solve for x
    x = 5,375,842,222.64/82,743.90
  6. Step 6: Final answer
    x = 64,969.65

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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.