Home / 78,134.33-107,825.51-42,324.64

Finding the Fourth Proportional to 78,134.33, 107,825.51 and 42,324.64

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Solution

The fourth proportional to 78,134.33, 107,825.51 and 42,324.64 is: 58,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,134.33 : 107,825.51 = 42,324.64 : x
  2. Step 2: Convert to fraction form
    78,134.33/107,825.51 = 42,324.64/x
  3. Step 3: Cross multiply
    78,134.33x = 107,825.51 × 42,324.64
  4. Step 4: Simplify right side
    78,134.33x = 4,563,675,893.57
  5. Step 5: Solve for x
    x = 4,563,675,893.57/78,134.33
  6. Step 6: Final answer
    x = 58,408.08

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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.