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Finding the Fourth Proportional to 66,458,145.60, 99,639,979.20 and 25,501,759.20

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Solution

The fourth proportional to 66,458,145.60, 99,639,979.20 and 25,501,759.20 is: 38,234,511.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458,145.60 : 99,639,979.20 = 25,501,759.20 : x
  2. Step 2: Convert to fraction form
    66,458,145.60/99,639,979.20 = 25,501,759.20/x
  3. Step 3: Cross multiply
    66,458,145.60x = 99,639,979.20 × 25,501,759.20
  4. Step 4: Simplify right side
    66,458,145.60x = 2,540,994,756,251,408.50
  5. Step 5: Solve for x
    x = 2,540,994,756,251,408.50/66,458,145.60
  6. Step 6: Final answer
    x = 38,234,511.86

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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.