Home / 30,531,339-45,789,911.64-8,960,148.78

Finding the Fourth Proportional to 30,531,339, 45,789,911.64 and 8,960,148.78

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Solution

The fourth proportional to 30,531,339, 45,789,911.64 and 8,960,148.78 is: 13,438,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531,339 : 45,789,911.64 = 8,960,148.78 : x
  2. Step 2: Convert to fraction form
    30,531,339/45,789,911.64 = 8,960,148.78/x
  3. Step 3: Cross multiply
    30,531,339x = 45,789,911.64 × 8,960,148.78
  4. Step 4: Simplify right side
    30,531,339x = 410,284,420,917,453.75
  5. Step 5: Solve for x
    x = 410,284,420,917,453.75/30,531,339
  6. Step 6: Final answer
    x = 13,438,140.43

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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.