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Finding the Fourth Proportional to 84,697,822.80, 127,172,705.40 and 65,550,200.40

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Solution

The fourth proportional to 84,697,822.80, 127,172,705.40 and 65,550,200.40 is: 98,422,793.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,697,822.80 : 127,172,705.40 = 65,550,200.40 : x
  2. Step 2: Convert to fraction form
    84,697,822.80/127,172,705.40 = 65,550,200.40/x
  3. Step 3: Cross multiply
    84,697,822.80x = 127,172,705.40 × 65,550,200.40
  4. Step 4: Simplify right side
    84,697,822.80x = 8,336,196,324,380,162
  5. Step 5: Solve for x
    x = 8,336,196,324,380,162/84,697,822.80
  6. Step 6: Final answer
    x = 98,422,793.51

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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.