Home / 81,849.60-122,734.08-26,438.40

Finding the Fourth Proportional to 81,849.60, 122,734.08 and 26,438.40

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Solution

The fourth proportional to 81,849.60, 122,734.08 and 26,438.40 is: 39,644.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,849.60 : 122,734.08 = 26,438.40 : x
  2. Step 2: Convert to fraction form
    81,849.60/122,734.08 = 26,438.40/x
  3. Step 3: Cross multiply
    81,849.60x = 122,734.08 × 26,438.40
  4. Step 4: Simplify right side
    81,849.60x = 3,244,892,700.67
  5. Step 5: Solve for x
    x = 3,244,892,700.67/81,849.60
  6. Step 6: Final answer
    x = 39,644.58

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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.