Home / 66,422,717.40-99,634,076.10-40,780,579.80

Finding the Fourth Proportional to 66,422,717.40, 99,634,076.10 and 40,780,579.80

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Solution

The fourth proportional to 66,422,717.40, 99,634,076.10 and 40,780,579.80 is: 61,170,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422,717.40 : 99,634,076.10 = 40,780,579.80 : x
  2. Step 2: Convert to fraction form
    66,422,717.40/99,634,076.10 = 40,780,579.80/x
  3. Step 3: Cross multiply
    66,422,717.40x = 99,634,076.10 × 40,780,579.80
  4. Step 4: Simplify right side
    66,422,717.40x = 4,063,135,391,195,322
  5. Step 5: Solve for x
    x = 4,063,135,391,195,322/66,422,717.40
  6. Step 6: Final answer
    x = 61,170,869.70

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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.