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Finding the Fourth Proportional to 78,593.31, 117,784.80 and 38,551.06

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Solution

The fourth proportional to 78,593.31, 117,784.80 and 38,551.06 is: 57,775.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,593.31 : 117,784.80 = 38,551.06 : x
  2. Step 2: Convert to fraction form
    78,593.31/117,784.80 = 38,551.06/x
  3. Step 3: Cross multiply
    78,593.31x = 117,784.80 × 38,551.06
  4. Step 4: Simplify right side
    78,593.31x = 4,540,728,891.89
  5. Step 5: Solve for x
    x = 4,540,728,891.89/78,593.31
  6. Step 6: Final answer
    x = 57,775.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.