Home / 78,044.25-117,060.34-21,881.38

Finding the Fourth Proportional to 78,044.25, 117,060.34 and 21,881.38

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Solution

The fourth proportional to 78,044.25, 117,060.34 and 21,881.38 is: 32,820.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,044.25 : 117,060.34 = 21,881.38 : x
  2. Step 2: Convert to fraction form
    78,044.25/117,060.34 = 21,881.38/x
  3. Step 3: Cross multiply
    78,044.25x = 117,060.34 × 21,881.38
  4. Step 4: Simplify right side
    78,044.25x = 2,561,441,087.76
  5. Step 5: Solve for x
    x = 2,561,441,087.76/78,044.25
  6. Step 6: Final answer
    x = 32,820.37

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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.