Home / 78,825.82-108,781.95-43,018.14

Finding the Fourth Proportional to 78,825.82, 108,781.95 and 43,018.14

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Solution

The fourth proportional to 78,825.82, 108,781.95 and 43,018.14 is: 59,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.82 : 108,781.95 = 43,018.14 : x
  2. Step 2: Convert to fraction form
    78,825.82/108,781.95 = 43,018.14/x
  3. Step 3: Cross multiply
    78,825.82x = 108,781.95 × 43,018.14
  4. Step 4: Simplify right side
    78,825.82x = 4,679,597,154.57
  5. Step 5: Solve for x
    x = 4,679,597,154.57/78,825.82
  6. Step 6: Final answer
    x = 59,366.30

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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.