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Finding the Fourth Proportional to 68,414,497.60, 102,679,807.20 and 28,053,947.20

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Solution

The fourth proportional to 68,414,497.60, 102,679,807.20 and 28,053,947.20 is: 42,104,729.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,414,497.60 : 102,679,807.20 = 28,053,947.20 : x
  2. Step 2: Convert to fraction form
    68,414,497.60/102,679,807.20 = 28,053,947.20/x
  3. Step 3: Cross multiply
    68,414,497.60x = 102,679,807.20 × 28,053,947.20
  4. Step 4: Simplify right side
    68,414,497.60x = 2,880,573,889,694,980
  5. Step 5: Solve for x
    x = 2,880,573,889,694,980/68,414,497.60
  6. Step 6: Final answer
    x = 42,104,729.13

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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.