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Finding the Fourth Proportional to 68,984,052.20, 103,476,078.30 and 47,484,967.40

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Solution

The fourth proportional to 68,984,052.20, 103,476,078.30 and 47,484,967.40 is: 71,227,451.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,984,052.20 : 103,476,078.30 = 47,484,967.40 : x
  2. Step 2: Convert to fraction form
    68,984,052.20/103,476,078.30 = 47,484,967.40/x
  3. Step 3: Cross multiply
    68,984,052.20x = 103,476,078.30 × 47,484,967.40
  4. Step 4: Simplify right side
    68,984,052.20x = 4,913,558,204,755,347
  5. Step 5: Solve for x
    x = 4,913,558,204,755,347/68,984,052.20
  6. Step 6: Final answer
    x = 71,227,451.10

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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.