Home / 81,931.04-122,916-26,527.04

Finding the Fourth Proportional to 81,931.04, 122,916 and 26,527.04

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Solution

The fourth proportional to 81,931.04, 122,916 and 26,527.04 is: 39,796.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,931.04 : 122,916 = 26,527.04 : x
  2. Step 2: Convert to fraction form
    81,931.04/122,916 = 26,527.04/x
  3. Step 3: Cross multiply
    81,931.04x = 122,916 × 26,527.04
  4. Step 4: Simplify right side
    81,931.04x = 3,260,597,648.64
  5. Step 5: Solve for x
    x = 3,260,597,648.64/81,931.04
  6. Step 6: Final answer
    x = 39,796.85

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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.