Home / 66,428,799.20-99,643,198.80-40,786,661.60

Finding the Fourth Proportional to 66,428,799.20, 99,643,198.80 and 40,786,661.60

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Solution

The fourth proportional to 66,428,799.20, 99,643,198.80 and 40,786,661.60 is: 61,179,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,799.20 : 99,643,198.80 = 40,786,661.60 : x
  2. Step 2: Convert to fraction form
    66,428,799.20/99,643,198.80 = 40,786,661.60/x
  3. Step 3: Cross multiply
    66,428,799.20x = 99,643,198.80 × 40,786,661.60
  4. Step 4: Simplify right side
    66,428,799.20x = 4,064,113,430,197,126
  5. Step 5: Solve for x
    x = 4,064,113,430,197,126/66,428,799.20
  6. Step 6: Final answer
    x = 61,179,992.40

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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.