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Finding the Fourth Proportional to 68,973.61, 103,386.86 and 39,327.61

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Solution

The fourth proportional to 68,973.61, 103,386.86 and 39,327.61 is: 58,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,973.61 : 103,386.86 = 39,327.61 : x
  2. Step 2: Convert to fraction form
    68,973.61/103,386.86 = 39,327.61/x
  3. Step 3: Cross multiply
    68,973.61x = 103,386.86 × 39,327.61
  4. Step 4: Simplify right side
    68,973.61x = 4,065,958,109.20
  5. Step 5: Solve for x
    x = 4,065,958,109.20/68,973.61
  6. Step 6: Final answer
    x = 58,949.48

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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.