Home / 65,791.96-90,787.39-38,929.79

Finding the Fourth Proportional to 65,791.96, 90,787.39 and 38,929.79

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Solution

The fourth proportional to 65,791.96, 90,787.39 and 38,929.79 is: 53,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,791.96 : 90,787.39 = 38,929.79 : x
  2. Step 2: Convert to fraction form
    65,791.96/90,787.39 = 38,929.79/x
  3. Step 3: Cross multiply
    65,791.96x = 90,787.39 × 38,929.79
  4. Step 4: Simplify right side
    65,791.96x = 3,534,334,156.99
  5. Step 5: Solve for x
    x = 3,534,334,156.99/65,791.96
  6. Step 6: Final answer
    x = 53,719.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.