Home / 81,271.46-121,796.46-39,148.48

Finding the Fourth Proportional to 81,271.46, 121,796.46 and 39,148.48

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Solution

The fourth proportional to 81,271.46, 121,796.46 and 39,148.48 is: 58,669.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271.46 : 121,796.46 = 39,148.48 : x
  2. Step 2: Convert to fraction form
    81,271.46/121,796.46 = 39,148.48/x
  3. Step 3: Cross multiply
    81,271.46x = 121,796.46 × 39,148.48
  4. Step 4: Simplify right side
    81,271.46x = 4,768,146,278.38
  5. Step 5: Solve for x
    x = 4,768,146,278.38/81,271.46
  6. Step 6: Final answer
    x = 58,669.38

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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.