Home / 78,512.82-108,346.92-42,703.14

Finding the Fourth Proportional to 78,512.82, 108,346.92 and 42,703.14

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Solution

The fourth proportional to 78,512.82, 108,346.92 and 42,703.14 is: 58,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,512.82 : 108,346.92 = 42,703.14 : x
  2. Step 2: Convert to fraction form
    78,512.82/108,346.92 = 42,703.14/x
  3. Step 3: Cross multiply
    78,512.82x = 108,346.92 × 42,703.14
  4. Step 4: Simplify right side
    78,512.82x = 4,626,753,693.33
  5. Step 5: Solve for x
    x = 4,626,753,693.33/78,512.82
  6. Step 6: Final answer
    x = 58,929.91

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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.