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Finding the Fourth Proportional to 64,791.61, 89,419.70 and 36,113.89

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Solution

The fourth proportional to 64,791.61, 89,419.70 and 36,113.89 is: 49,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,791.61 : 89,419.70 = 36,113.89 : x
  2. Step 2: Convert to fraction form
    64,791.61/89,419.70 = 36,113.89/x
  3. Step 3: Cross multiply
    64,791.61x = 89,419.70 × 36,113.89
  4. Step 4: Simplify right side
    64,791.61x = 3,229,292,915.14
  5. Step 5: Solve for x
    x = 3,229,292,915.14/64,791.61
  6. Step 6: Final answer
    x = 49,841.22

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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.