Home / 42,715,542.40-64,067,092.80-12,420,246.40

Finding the Fourth Proportional to 42,715,542.40, 64,067,092.80 and 12,420,246.40

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Solution

The fourth proportional to 42,715,542.40, 64,067,092.80 and 12,420,246.40 is: 18,628,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,715,542.40 : 64,067,092.80 = 12,420,246.40 : x
  2. Step 2: Convert to fraction form
    42,715,542.40/64,067,092.80 = 12,420,246.40/x
  3. Step 3: Cross multiply
    42,715,542.40x = 64,067,092.80 × 12,420,246.40
  4. Step 4: Simplify right side
    42,715,542.40x = 795,729,078,707,665.88
  5. Step 5: Solve for x
    x = 795,729,078,707,665.88/42,715,542.40
  6. Step 6: Final answer
    x = 18,628,560.80

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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.