Home / 65,791.72-90,787.05-38,929.52

Finding the Fourth Proportional to 65,791.72, 90,787.05 and 38,929.52

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Solution

The fourth proportional to 65,791.72, 90,787.05 and 38,929.52 is: 53,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,791.72 : 90,787.05 = 38,929.52 : x
  2. Step 2: Convert to fraction form
    65,791.72/90,787.05 = 38,929.52/x
  3. Step 3: Cross multiply
    65,791.72x = 90,787.05 × 38,929.52
  4. Step 4: Simplify right side
    65,791.72x = 3,534,296,278.72
  5. Step 5: Solve for x
    x = 3,534,296,278.72/65,791.72
  6. Step 6: Final answer
    x = 53,719.47

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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.