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Finding the Fourth Proportional to 78,878,451.60, 108,857,895.89 and 43,595,498.48

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Solution

The fourth proportional to 78,878,451.60, 108,857,895.89 and 43,595,498.48 is: 60,164,901.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,878,451.60 : 108,857,895.89 = 43,595,498.48 : x
  2. Step 2: Convert to fraction form
    78,878,451.60/108,857,895.89 = 43,595,498.48/x
  3. Step 3: Cross multiply
    78,878,451.60x = 108,857,895.89 × 43,595,498.48
  4. Step 4: Simplify right side
    78,878,451.60x = 4,745,714,234,046,227
  5. Step 5: Solve for x
    x = 4,745,714,234,046,227/78,878,451.60
  6. Step 6: Final answer
    x = 60,164,901.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.