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Finding the Fourth Proportional to 69,906,071.80, 104,859,107.70 and 45,719,601.40

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Solution

The fourth proportional to 69,906,071.80, 104,859,107.70 and 45,719,601.40 is: 68,579,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,906,071.80 : 104,859,107.70 = 45,719,601.40 : x
  2. Step 2: Convert to fraction form
    69,906,071.80/104,859,107.70 = 45,719,601.40/x
  3. Step 3: Cross multiply
    69,906,071.80x = 104,859,107.70 × 45,719,601.40
  4. Step 4: Simplify right side
    69,906,071.80x = 4,794,116,607,203,671
  5. Step 5: Solve for x
    x = 4,794,116,607,203,671/69,906,071.80
  6. Step 6: Final answer
    x = 68,579,402.10

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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.