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Finding the Fourth Proportional to 68,822,276.80, 103,233,415.20 and 38,211,275.20

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Solution

The fourth proportional to 68,822,276.80, 103,233,415.20 and 38,211,275.20 is: 57,316,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,822,276.80 : 103,233,415.20 = 38,211,275.20 : x
  2. Step 2: Convert to fraction form
    68,822,276.80/103,233,415.20 = 38,211,275.20/x
  3. Step 3: Cross multiply
    68,822,276.80x = 103,233,415.20 × 38,211,275.20
  4. Step 4: Simplify right side
    68,822,276.80x = 3,944,680,438,043,063.50
  5. Step 5: Solve for x
    x = 3,944,680,438,043,063.50/68,822,276.80
  6. Step 6: Final answer
    x = 57,316,912.80

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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.