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Finding the Fourth Proportional to 49,963,608.80, 74,973,406.80 and 21,204,850.40

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Solution

The fourth proportional to 49,963,608.80, 74,973,406.80 and 21,204,850.40 is: 31,819,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,963,608.80 : 74,973,406.80 = 21,204,850.40 : x
  2. Step 2: Convert to fraction form
    49,963,608.80/74,973,406.80 = 21,204,850.40/x
  3. Step 3: Cross multiply
    49,963,608.80x = 74,973,406.80 × 21,204,850.40
  4. Step 4: Simplify right side
    49,963,608.80x = 1,589,799,875,172,342.50
  5. Step 5: Solve for x
    x = 1,589,799,875,172,342.50/49,963,608.80
  6. Step 6: Final answer
    x = 31,819,156.25

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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.