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Finding the Fourth Proportional to 66,973,569.80, 100,454,449.80 and 18,447,101.60

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Solution

The fourth proportional to 66,973,569.80, 100,454,449.80 and 18,447,101.60 is: 27,669,025.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,973,569.80 : 100,454,449.80 = 18,447,101.60 : x
  2. Step 2: Convert to fraction form
    66,973,569.80/100,454,449.80 = 18,447,101.60/x
  3. Step 3: Cross multiply
    66,973,569.80x = 100,454,449.80 × 18,447,101.60
  4. Step 4: Simplify right side
    66,973,569.80x = 1,853,093,441,632,699.75
  5. Step 5: Solve for x
    x = 1,853,093,441,632,699.75/66,973,569.80
  6. Step 6: Final answer
    x = 27,669,025.96

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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.