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Finding the Fourth Proportional to 67,486.77, 93,131.74 and 39,194.28

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Solution

The fourth proportional to 67,486.77, 93,131.74 and 39,194.28 is: 54,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,486.77 : 93,131.74 = 39,194.28 : x
  2. Step 2: Convert to fraction form
    67,486.77/93,131.74 = 39,194.28/x
  3. Step 3: Cross multiply
    67,486.77x = 93,131.74 × 39,194.28
  4. Step 4: Simplify right side
    67,486.77x = 3,650,231,494.45
  5. Step 5: Solve for x
    x = 3,650,231,494.45/67,486.77
  6. Step 6: Final answer
    x = 54,088.10

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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.