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Finding the Fourth Proportional to 68,859.82, 103,289.75 and 22,145.50

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Solution

The fourth proportional to 68,859.82, 103,289.75 and 22,145.50 is: 33,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,859.82 : 103,289.75 = 22,145.50 : x
  2. Step 2: Convert to fraction form
    68,859.82/103,289.75 = 22,145.50/x
  3. Step 3: Cross multiply
    68,859.82x = 103,289.75 × 22,145.50
  4. Step 4: Simplify right side
    68,859.82x = 2,287,402,531.45
  5. Step 5: Solve for x
    x = 2,287,402,531.45/68,859.82
  6. Step 6: Final answer
    x = 33,218.25

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1.5x scale

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.