Home / 31,557,876.72-47,338,165.80-12,392,780.64

Finding the Fourth Proportional to 31,557,876.72, 47,338,165.80 and 12,392,780.64

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Solution

The fourth proportional to 31,557,876.72, 47,338,165.80 and 12,392,780.64 is: 18,589,701.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,557,876.72 : 47,338,165.80 = 12,392,780.64 : x
  2. Step 2: Convert to fraction form
    31,557,876.72/47,338,165.80 = 12,392,780.64/x
  3. Step 3: Cross multiply
    31,557,876.72x = 47,338,165.80 × 12,392,780.64
  4. Step 4: Simplify right side
    31,557,876.72x = 586,651,504,659,350.12
  5. Step 5: Solve for x
    x = 586,651,504,659,350.12/31,557,876.72
  6. Step 6: Final answer
    x = 18,589,701.39

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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.