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Finding the Fourth Proportional to 28,085,359.80, 39,432,877.80 and 28,085,359.80

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Solution

The fourth proportional to 28,085,359.80, 39,432,877.80 and 28,085,359.80 is: 39,432,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085,359.80 : 39,432,877.80 = 28,085,359.80 : x
  2. Step 2: Convert to fraction form
    28,085,359.80/39,432,877.80 = 28,085,359.80/x
  3. Step 3: Cross multiply
    28,085,359.80x = 39,432,877.80 × 28,085,359.80
  4. Step 4: Simplify right side
    28,085,359.80x = 1,107,486,560,962,432.38
  5. Step 5: Solve for x
    x = 1,107,486,560,962,432.38/28,085,359.80
  6. Step 6: Final answer
    x = 39,432,877.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.