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Finding the Fourth Proportional to 68,414,496.60, 102,679,805.70 and 28,053,946.20

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Solution

The fourth proportional to 68,414,496.60, 102,679,805.70 and 28,053,946.20 is: 42,104,727.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,414,496.60 : 102,679,805.70 = 28,053,946.20 : x
  2. Step 2: Convert to fraction form
    68,414,496.60/102,679,805.70 = 28,053,946.20/x
  3. Step 3: Cross multiply
    68,414,496.60x = 102,679,805.70 × 28,053,946.20
  4. Step 4: Simplify right side
    68,414,496.60x = 2,880,573,744,934,253.50
  5. Step 5: Solve for x
    x = 2,880,573,744,934,253.50/68,414,496.60
  6. Step 6: Final answer
    x = 42,104,727.62

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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.