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Finding the Fourth Proportional to 80,525.88, 120,798.42 and 38,943

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Solution

The fourth proportional to 80,525.88, 120,798.42 and 38,943 is: 58,419.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,525.88 : 120,798.42 = 38,943 : x
  2. Step 2: Convert to fraction form
    80,525.88/120,798.42 = 38,943/x
  3. Step 3: Cross multiply
    80,525.88x = 120,798.42 × 38,943
  4. Step 4: Simplify right side
    80,525.88x = 4,704,252,870.06
  5. Step 5: Solve for x
    x = 4,704,252,870.06/80,525.88
  6. Step 6: Final answer
    x = 58,419.14

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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.