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Finding the Fourth Proportional to 86,115.41, 118,839.90 and 47,353.91

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Solution

The fourth proportional to 86,115.41, 118,839.90 and 47,353.91 is: 65,348.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,115.41 : 118,839.90 = 47,353.91 : x
  2. Step 2: Convert to fraction form
    86,115.41/118,839.90 = 47,353.91/x
  3. Step 3: Cross multiply
    86,115.41x = 118,839.90 × 47,353.91
  4. Step 4: Simplify right side
    86,115.41x = 5,627,533,929.01
  5. Step 5: Solve for x
    x = 5,627,533,929.01/86,115.41
  6. Step 6: Final answer
    x = 65,348.74

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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.