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Finding the Fourth Proportional to 82,695.17, 124,042.79 and 20,365.67

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Solution

The fourth proportional to 82,695.17, 124,042.79 and 20,365.67 is: 30,548.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,695.17 : 124,042.79 = 20,365.67 : x
  2. Step 2: Convert to fraction form
    82,695.17/124,042.79 = 20,365.67/x
  3. Step 3: Cross multiply
    82,695.17x = 124,042.79 × 20,365.67
  4. Step 4: Simplify right side
    82,695.17x = 2,526,214,527.02
  5. Step 5: Solve for x
    x = 2,526,214,527.02/82,695.17
  6. Step 6: Final answer
    x = 30,548.51

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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.