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Finding the Fourth Proportional to 103,650, 155,468.82 and 60,979.41

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Solution

The fourth proportional to 103,650, 155,468.82 and 60,979.41 is: 91,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,650 : 155,468.82 = 60,979.41 : x
  2. Step 2: Convert to fraction form
    103,650/155,468.82 = 60,979.41/x
  3. Step 3: Cross multiply
    103,650x = 155,468.82 × 60,979.41
  4. Step 4: Simplify right side
    103,650x = 9,480,396,917.00
  5. Step 5: Solve for x
    x = 9,480,396,917.00/103,650
  6. Step 6: Final answer
    x = 91,465.48

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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.