Home / 31,534,740.30-43,511,442.03-18,120,813.96

Finding the Fourth Proportional to 31,534,740.30, 43,511,442.03 and 18,120,813.96

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Solution

The fourth proportional to 31,534,740.30, 43,511,442.03 and 18,120,813.96 is: 25,002,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,534,740.30 : 43,511,442.03 = 18,120,813.96 : x
  2. Step 2: Convert to fraction form
    31,534,740.30/43,511,442.03 = 18,120,813.96/x
  3. Step 3: Cross multiply
    31,534,740.30x = 43,511,442.03 × 18,120,813.96
  4. Step 4: Simplify right side
    31,534,740.30x = 788,462,745,848,793.38
  5. Step 5: Solve for x
    x = 788,462,745,848,793.38/31,534,740.30
  6. Step 6: Final answer
    x = 25,002,988.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.