Home / 28,757,040.80-43,156,984.70-21,100,470.75

Finding the Fourth Proportional to 28,757,040.80, 43,156,984.70 and 21,100,470.75

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Solution

The fourth proportional to 28,757,040.80, 43,156,984.70 and 21,100,470.75 is: 31,666,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,757,040.80 : 43,156,984.70 = 21,100,470.75 : x
  2. Step 2: Convert to fraction form
    28,757,040.80/43,156,984.70 = 21,100,470.75/x
  3. Step 3: Cross multiply
    28,757,040.80x = 43,156,984.70 × 21,100,470.75
  4. Step 4: Simplify right side
    28,757,040.80x = 910,632,693,320,547.62
  5. Step 5: Solve for x
    x = 910,632,693,320,547.62/28,757,040.80
  6. Step 6: Final answer
    x = 31,666,425.61

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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.